clamp connectors - galperti.pdf
TRANSCRIPT
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and Flow Control
CLAMP CONNECTORS
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Engineering Solutions...
GALPERTI ENGINEERING is an International Company whose business is the design, manufacture and supplyof high integrity connectors, forged fittings and flow control products.
Oil, Gas, Power and Petrochemical Companies utilize our products in a variety of applications, where oftencomplex technical problems can now be solved cost effectively.
In order to focus our effort upon our Customer requirements, GALPERTI ENGINEERING offer a total designand manufacturing capability, from our dedicated in-house forge through to finished product, a unique featurein todays ever demanding global marketplace.
The G-LOK Connector has an estabilished record throughout the world, meeting or exceeding all current in-dustry codes and standards.
Our facility is accredited with ISO 9001 and our products meet all current industry standards.
The G-LOK Clamp Connector is a fully proven alternative to the conventional flanged connection used throu-ghout the oil, gas, petrochemical and power generation industries. Produced in a comprehensive range of si-zes and materials they offer versatility, compactness, weight and cost effectiveness in connecting piping sy-stem.
The Connector is designed to meet ANSI B 16.5, ASME VIII, API 6A/Q1 and other design codes. The designhas the approval of Lloyds, DNV and Stoomwezen.
Clamp Connectors offer:
Easy Assembly
Compact Construction
Reduced Weight
Metal to metal sealing technology re-usable
Flexibility
Full Design approval
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Quality Type Approval & Testing
20 1
Contents
QUALITY ASSURANCE
GALPERTI ENGINEERING hasbeen successfully audited andawarded the prestigious BS ENISO 9001 accreditation for itsthorough Quality AssuranceProgramme.This ensures strict compliancewith all relevant RegulatorySpecifications and codesincluding ANSI, API, ASME, BS,NACE. Material specifications toASTM and BS are adhered to,and full traceability of allcomponents is assured.Using the latest CNC machinetools in a modern factoryenvironment, manufacture iscarried out inaccordance with all currentspecification.G-LOK connectors, in additionto meeting the current IndustryStandards for Interchangeability,can be supplied in accordancewith various designcodes/regulations including:
u ANSI/ASME
u API
u BS 5500
u UK Offshore Regulations
u Customers special requirements
u Country Codes
TYPE APPROVAL TESTING
The G-LOK range of connectorshas been subjected to extensivestrain gauge and destructivetesting and has been awardedfull design approval by LloydsRegister.
EXTERNAL LOADING
TensionThe G-LOK connector is capableof withstanding higher tensileloads than a conventional ANSIflange. Tensile loads can causeconventional flange faces toseparate, providing a leak pathacross the flange face. With thepressure energised bore seal, thisdoes not occur and the G-LOKconnector will remain leak tight.
BendingG-LOK connectors are designedto withstand severe bendingloads without leaking orloosening.Independent tests evaluatingG-LOK clamp connectors haveshown that even under severepressure and bending conditions,the connector does not leak andthe bolting remains tight.Increasing the bendingmovement to ultimate failure ofthe pipe has not resulted inconnector leakage.
CompressionAs in most cases thebearing area of the sealring ribis larger than the cross section ofthe adjoining pipe it becomesimpossible to over compress thesealring within the G-LOKconnector. For normal pipingapplications, the compressivelimits are governed by otherfactors such as piping flexibilityanalysis or anchor loads and inpractice the G-LOK connectorwill always perform under theapplied compressive loading.
Thermal ShockG-LOK connectors have beenapplied to both Cryogenic andhigh temperature service whichare subject to thermal transientconditions.For very severe thermal shock(i.e. quenching), the connectorscan be provided with thermalshrouds to protect the sealringlips from the full effects of thethermal shock.
G-LOK ADVANTAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
G-LOK SEVERE CONDITIONS APPLICATION . . . . . . . . . . . . . . . . . . . . . . 3
G-LOK SIZING SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
G-LOK ASSEMBLY AND DIS-ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . 5
G-LOK BUTTWELD HUBS / BLIND HUBS . . . . . . . . . . . . . . . . . . . . . . . . 6-7
G-LOK HEAVY DUTY BUTTWELD HUBS / BLIND HUBS . . . . . . . . . . . . . . 8-9
G-LOK SEAL RINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
G-LOK CLAMPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
G-LOK OTHER CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
G-LOK CARBON STEEL PRESSURE TEMPERATURE RATING . . . . . . . . . 14-15
G-LOK STAINLESS STEEL PRESSURE TEMPERATURE RATING . . . . . . . . 16-17
G-LOK SUPERDUPLEX PRESSURE TEMPERATURE RATING . . . . . . . . . . 18-19
G-LOK QUALITY TYPE APPROVAL AND TESTING . . . . . . . . . . . . . . . 20-21
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2 19
G-LOK The Advantages
Pressure Temperature Rating Superduplex
The G-LOK Connector is designed to offer thestrength and sealing integrity of a welded joint andthe versatility of a mechanical joint. It serves the sa-me purpose as a bolted flange assembly, with theadvantages of being more easily installed, lighterand smaller.A self-energized, pressure activated connection, theG-LOK, clamp-type connector consists of four basicelements:
(1) Hub
(2) Clamps
(3) Seal
(4) Bolting
The hubs are usually welded to pipe; the seal is in-stalled and the bolting is tightened on the clamps toform a pipe connector that provides superiorstrength and leak integrity. The G-LOK is commonlyused in service with temperatures of up to 650C.The G-LOK also excels in high pressure applica-tions, with working pressure of 30,000 psi not un-common.The G-LOK clamp has been designed for the opti-mum strenght of a bolted connection. Since the boltsare at right angles to the axis of the pipe, they donot receive direct bending and pressure loads. Thissystem of clamping provides greater strength thanANSI or API flanges at a fraction of the seal sizeand weight as a result of this design. Less boltingtorque is required for proper seating of the seal.The design of the connector provides considerablestored energy in the system when compared withANSI or API flanges. This stored energy works toprovide leak resistance during thermal cycling andmaintains proper bolt loading.When properly installed, the G-LOK will usuallyprovide greater bending and torsional strength thanthe connecting pipe. The full face contact of the con-nector resists bending and ensures rigidity not provi-ded by other clamp-type connectors. The pressureand temperature limitations are determined only bythe materials of construction.
HOW THE G-LOK CONNECTORS SEALS
The seal ring in the G-LOK resembles a T in crosssection. The base of the T is the rib that is held byabutting hub faces as the connection is made up.The top of the T forms the lips that seal against theinner surfaces of the hubs.In the assembly of the connection, the clamps fit over
the two hubs, and as they draw the hubs togetherthe seal ring rib ensures proper seal alignment.As the hubs are drawn together by the clamp as-sembly, the seal ring lips deflect against the innersealing surfaces of the hubs. This deflection elastical-ly loads the lips of the seal ring against the innersealing surface of the hub, forming the self-energi-zed seal. Internal pressure reinforces this seal, so thesealing action of the G-LOK is both self-energizedand pressure energized.
G-LOK clamp connectors are interchangeable withother connectors designed and manufactured accor-ding to the same standard.
G-LOK in FREE position
G-LOK in MADE-UP position
HEAVY DUTY SERIESClamp material-Low Alloy Steel
NOM.SIZE
G-LOKSIZE 20C 50C 100C 150C 150C
PRESSURE RATING (BAR)
2
3
4
6
8
10
12
14
16
18
20
24
B14B16B20
C20C23C25C27
D27D31D34D40
XF40XF46XF56
X862X864X867X872
X10H82X10H84X10H87X10H94X10H97
X12M102X12M106X12M112X12M120
A-P106A-P112A-P120A-P130
S112S120S130S134S137S140S152
U152U160U170
3V1603V1703V1803V192
3Y1923Y2003Y2103Y220
153214111309
148313541216903
13451210950765
15501150800
703616554501
666629569388298
549501434279
624548484414
889785672625592582453
462422374
476401362284
623607525429
148013631265
143313081175872
12991210950739
15001101755
703616554501
666629550375288
549501420270
624548484414
889785672625592582438
462422374
476401362284
623607525429
142813151220
138212621133842
12541191950713
14331033708
70361655
498
666629531362278
549501405260
624548484414
889785672625592582422
462422374
476401362284
623607525493
138712781185
134312261101818
12181157934693
1393995651
703616554484
666624515352270
549501393253
624548484414
889785672525592582410
462422374
476401362284
623607525429
136712591168
132312081084806
12001140920683
1294903620
703616554477
666615508346266
549498387249
624548484407
889785672625592582404
462422374
476401362284
623607525429
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18 3
Pressure Temperature Rating Superduplex
Designed To Withstands Severe Conditions
STANDARD SERIESClamp material-Low Alloy Steel
The G-LOK connector has been designed formany different critical service applications. Manyof these involve rapid cyclic operating conditionsover extended periods of time, with various com-binations of both pressure and temperature. Toensure compliance with the applicable design co-des with regard to these severe thermal and pres-sure excursions, G-LOK utilizes state of the artengineering technology.Finite Element Analysis (FEA) allows the detailedexamination of all connector elements under the-se varying conditions.
G-LOK CONNECTORS VS ANSI FLANGE
G-LOK Finite Element Model
The G-LOK clamp connection has a significantlysmaller diameter and a shorter lenght than that of acomparably rated ANSI or API ring joint flange con-nection, reducing weight and space required formake-up.The G-LOK is especially well suited to systems thatrequire close piping and hookup arrangements. Asthere are no bolt holes to align, the G-LOK clampmay be rotated to conveniently locate the bolts foreasy make-up and break-down of the connections.
SIZE
WEIGHTS GIVEN ARE APPROXIMATE
G-LOK CONNECTORS VS FLANGES
23468
101216
9182462100190280560
275074
175300485730
1.370
G-LOK
ASSEMBLY
WEIGHT KG.
ANSI FLANGES1500#
ASSEMBLY
WEIGHT KG.
NOM.SIZE
G-LOKSIZE 20C 50C 100C 150C 200C
PRESSURE RATING (BAR)
1
1,5
2
3
4
5
6
8
10
12
1GR41GR51GR7
1GR11
1,5GR111,5GR14
2GR142GR162GR20
3GR203GR233GR253GR273GR31
4GR254GR274GR314GR344GR40
5GR315GR345GR405GR465GR52
6GR406GR466GR526GR62
8GR628GR728GR768GR82
10H8410H8710H94
12M10212M11212M120
166915511172685
1456934
12891025747
13781214901548275
13411114959630361
13191037840623360
1108822663421
661472415299
534515433
573344251
161214991132662
1407903
1245991722
13321173871529266
12961077927609349
13191037840623356
1108822663407
661472415288
508493398
551335245
155614461092639
1357871
1202956696
12851131840511257
12501039894587336
13121037840622244
1108822663392
661472414278
494460355
516315213
151114041061621
1318846
1167928676
12481099816496249
12141009868570327
12751037840610334
1108822663381
661472403270
485428331
498299208
148913841045611
1299834
1150915666
12291083804489245
1197994856562322
12561037840601329
1108822663375
661472397266
459405306
476283189
(C) G-LOK HUBTYPE 12M102
(12" SCH. 160)G-LOK CLAMP
TYPE X12MG-LOK SEAL RING
TYPE 102ASSEMBLY WEIGHT
KG 345
(A) GC COMPACTFLANGE 12"2500 SCH. 160ASSEMBLY WEIGHTKG. 469
(B) WELDING NECKFLANGE 12" 2500 RTJSCH. 160ANSI B 16.5ASSEMBLY WEIGHT1710 KG
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4 17
Sizing Selections
Pressure Temperature Rating Stainless Steel
HOW TO SELECTTHE G-LOK CONNECTOR
1) Determine the following information needed tocorrectly size the G-LOK connector:
Maximum Service Pressure and Temperature (YourDesign Conditions)
The engineering or industry code your project hasspecified. (ASME VIII, B31.3, etc.)
Pipe size and schedule or the I.D. and O.D. of theweld end.
Your piping material.
2) Refer to the tables in this catalogue:
Locate your pipe size and schedule in the Buttweld hub table on pages 6 to 7, then read acrossto the corresponding hub size (third column). Asan example, the 4 schedule 40 Pipe requires aG-LOK Hub size of 4GR40. Also note that thischart has weights and dimensions for this hub andfor most popular hub sizes.
The G-LOK number for the 4GR40 designates thecorrect clamp, bolting and seal ring sizes for thisconnection. The first number refers to the pipe andclamp size, in our example the pipe size is 4 andthe clamp would be the 4. More information onthe clamp can be located in the Clamp table onpage 11.
The final set of numbers is the G-LOK seal for thisconnection (in our example this would be a 40).The G-LOK seal chart is located on page 10.
3) Finally, refer to the pressure-temperature ratingcharts, on pages 14 to 19, to ensure that theG-LOK connector selected meets the design pressu-re and temperature requirements for the code towhich it is being specified.
The standard line of G-LOK connectors andproducts are available in materials and sizesto fit nearly any requirement. But if your requi-rements, pipe size, material or design condi-tions, are not covered by one of our charts,please contact Galperti Engineering. We havean engineering and design staff ready to helpyou solve your most demanding needs.
HOW TO ORDERTHE G-LOK CONNECTOR
After following the selection procedures the informa-tion necessary for ordering G-LOK connectors isthe quantity, the hub number and material, the sealnumber and seal material, and the clamp numberand clamp material.
A G-LOK assembly consists of the following:
Two G-LOK Hubs
One G-LOK Clamp Set, with four studs and eightnuts (Spherical washer available on request)
One G-LOK Seal Ring
HEAVY DUTY SERIESClamp material-Low Alloy Steel
NOM.SIZE
G-LOKSIZE 50C 100C 150C 200C 250C 300C 350C
PRESSURE RATING (BAR)
2
3
4
6
8
10
12
14
16
18
20
24
B14B16B20
C20C23C25C27
D27D31D34D40
XF40XF46XF56
X862X864X867X872
X10H82X10H84X10H87X10H94X10H97
X12M102X12M106X12M112X12M120
A-P106A-P112A-P120A-P130
S112S120S130S134S137S140S152
U152U160U170
3V1603V1703V1803V192
3Y1923Y2003Y2103Y220
737679630
713651585434
647614496368
992736512
483397330257
368331274187143
332269209134
468411332220
586529424377343332218
262237211
254225204177
464459394316
648597554
628573514382
569541437324
960705483
425349290226
324292241164126
293237184118
412362292193
516465373332302292192
260237211
254225204177
453448394316
593546506
574524470349
520494399296
917661453
388319265207
296267220150115
267216168108
376331267177
472425341303276267175
260237211
254225204177
409402367316
546503467
528483433322
479455368273
891637417
358294244191
273246203138106
24619915599
347305246163
434392315279254246161
251228205
246218196171
374367336306
513472438
496453407302
450428345256
828578397
336276229179
256231191130100
23118714593
326286231153
408368295263239231152
237215193
231204183161
354347312284
487448416
471430386287
427406328243
796554372
319262218170
24321918112395
21917713889
309271219145
387349280249227219144
223204181
218193180151
338329296270
481443411
466425382284
422401324240
768511335
315259215168
24021617912294
21717613688
305268217143
383345277246224217142
218200178
214189169148
331324291265
4 G-LOK
CLAMP SET
SEALRINGSIZE 40
4G-LOK
HUB
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16 5
Pressure Temperature Rating Stainless Steel
Assembly and Dis-Assembly Procedure
INSPECT COMPONENTS PRIORTO ASSEMBLYHub and sealring seating surfaces must beclean and free from foreign matter. Damage tohub seats is not acceptable, and should be rec-tified before assembly.
LUBRICATEUsually sealrings are coated which acts as lu-brificant during make-upe. If required light oilor MoS2 spray can be used. Take care that nosolid particles are present in the lubricant.
CHECK SEALRING STANDOFFThe sealring should rock slightly against hubface.Stand-off dimensions given below in mm.
ASSEMBLE COMPONENTSInstall sealring into the hubs, and assembleclamps around the hubs. Lubricant applied tothe hub/clamp contact area will aid assembly.The studbolts should be fitted ensuring thatspherically faced nuts locate into sphericalseats of the clamps. Lubrication of nut facesand bolt threads is recommended.
TIGHTEN BOLTS IN UNIFORM MANNERBolting should be tightened to keep spacingbetween clamp halves approximately equal.Clamp segments should be shocked with suita-ble soft faced hammer to aid assembly. Alwaysre-t ighten bolts after shocking to thetorque/preload values given below.
ALIGN HUBSHubs should be aligned so that sealring can beinstalled between hubs. DO NOT attempt tocorrect badly mis-aligned piping by clampingforce alone; piping pulling forces should onlybe released when clamps is fully assembled.
ASSEMBLY
DE-PRESSURISE THE LINEAlways check, never take for granted that theline has been de-pressurised. Proceed withcaution in case seepage has caused pressureto build up again.
SLACKEN NUTS BUT DO NOT REMOVE THENUTS FROM THE BOLTS - THEN SLACKENCLAMP SEGMENTSGradually run the nuts back along the bolts un-til just loose. If clamp segments remain boundonto hubs, then BOTH segments must beslackened by hitting the inner face of the clamplugs with a suitable hammer.
REPEAT SLACKENING PROCEDURERe-loosen nuts and re-slacken BOTH clampsegments until the maximum nut travel shownbelow is reached. This should release seal ringcontact and any residual pressure will then bereleased through, with the joint.
CHECK CLAMPS ARE SLACK AND FREE TOROTATE AND/OR ROCK ABOUT HUBSDo not proceed until discharge ceases andclamps are slack, free to rotate or rock. NOTE- If pressure is still in the line, the sealring mi-ght remain seated, making the joint tight eventhough it is part dis-assembled. Dis-assemblycan be completed when clamps are free to mo-ve.
X = Nut travel at each end of bolt
2X = Total nut travel from assembled position
DIS-ASSEMBLY
SEAL RINGSIZE
CLAMPSIZE
BOLTSIZE
RECOMANDEDBOLT TENSIONRESIDUAL (KN)
MAXIMUMBOLT TENSIONRESIDUAL (KN)
RECOMANDEDBOLT TORQUEnu=0,10 (Nm)
MAXIMUMBOLT TORQUEnu=0,10 (Nm)
A4A5A7
A1114
A16A2023
A2527313440465256626772
0,40,40,450,450,50,50,550,60,60,650,70,750,80,90,90,91,11,11,1
0,200,200,230,230,250,250,280,300,300,330,350,380,400,450,450,450,550,550,55
768284879497
102106112120130137140144152160170180192200210213220
1,21,351,21,21,41,51,71,71,41,81,91,51,922,12,32,52,72,933,13,153,25
0,600,680,600,600,700,750,850,850,700,900,950,750,951,001,051,151,251,351,451,501,551,581,63
STAN DOFFNOMINAL
STAN DOFFFOR RE-USE
11,5234D6XF8X8
10HX10H12MX12MA-P5PSU3V3Y
1/2"5/8"3/4"3/4"7/8"1"
1-1/8"1-1/4"1-1/4"1-3/8"1-5/8"1-3/4"1-3/4"
2"2"
2-1/2"2-1/2"2-1/2"2-1/4"3-1/4"
8,3222434476281103103129187220220295295478478478381833
12,43336496991119152152189275324324435435703703703561
1227
20595779
1632153514864866521089136713672054195140484048404839398963
298783
11624131651771671696116042013201330242873596159615961432812006
XCLAMP SIZE MM MM
2X
STANDARD CLAMP SERIES
112 234568
1012
33345712141618
6668101425283236
BCDX8X10HX12MA--PSU3V3Y
3451216192020212223
68112432384041424446
HEAVY DUTY SERIES
STANDARD SERIESClamp material-Low Alloy Steel
NOM.SIZE
G-LOKSIZE 50C 100C 150C 200C 250C 300C 350C
PRESSURE RATING (BAR)
1
1,5
2
3
4
5
6
8
10
12
1GR41GR51GR71GR11
1,5GR111,5GR14
2GR142GR162GR20
3GR203GR233GR253GR273GR31
4GR254GR274GR314GR344GR40
5GR315GR345GR405GR465GR52
6GR406GR466GR526GR62
8GR628GR728GR768GR82
10H8410H8710H94
12M10212M11212M120
803746564330
700450
620493359
663584433264132
645536461303174
677612517324177
655542401202
526301214144
342330277
366220161
706656496290
616395
546434316
583514381232116
568472406267153
596539455285156
576477352178
463265188126
325315254
353214157
646600453265
563361
499397289
533469349212106
519431371244140
545492416260143
527436322163
423424172116
316294227
330202148
595553418244
519333
459365266
49143332119598
478397342225129
502454383240131
485401297150
390223159106
310274212
318191133
559519392229
487313
432343250
46140630218392
449373321211121
471426360225123
456377279141
366209149100
294259196
305181121
530493372218
462297
409326237
43838528617487
426354305200115
447404341214117
432358264134
34719914195
274250186
282165113
524487368215
457294
405322235
43338128317286
421350301198113
442400337211116
428354262132
34319614094
261242174
257158102
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6 15
Buttweld HubsBlind Hubs
Pressure Temperature Rating Carbon Steel
DesignationsThe G-LOK connector designation (exam-ple 4 GR 40) designates the correct hub,clamp, bolting and sealring sizes. The firstnumber (4 in the example) refers to thehub and clamp size. The correct clamp canbe located in the clamp table on page 11.The second number in the designation(40 in the example) refers to the sealringsize. The correct sealring can be located inthe sealring table on page 10.
G-LOK blind hubs are designed to savespace.Available for all standard size G-LOK con-nectors, they can carry the full basic pres-sure rating of the G-LOK connector.They can also be used as closures for pres-sure vessels and heat exchangers, and canbe drilled and tapped to incorporate instru-mentation, and customised to fit your speci-fic requirements.
HEAVY DUTY SERIESClamp material-Low Alloy Steel
NPS SCH. G-LOK
SIZE
PIPEO.D.
A B C D D1 E F KG KG
INSIDEDIAMETER
OUTSIDEDIAMETER
BW-HUBLENGTH
BL-HUBLENGTH
HUB BACKFACE
LIPTHICKNESS
BW-HUBWEIGHT
BL-HUBWEIGHT
STANDARD HUBS
0,50,50,50,50,750,750,750,75
11111
1,51,51,51,51,52222222222
2,52,53333333334444444444
4080160XXS4080160XXS4080160XXS
10 mm4080160XXS
14,2 mm4080160160XXSXXSXXS
12,5 mm14,2 mm17,5 mm
XXS20 mm
4080160XXSXXSXXS
16 mm17,5 mm25 mm
408080120160XXSXXSXXS
7,5 mm20 mm
1GR-A51GR-A51GR-A41GR-A4GR-A71GR-A71GR-A51GR-A41GR-A111GR-A111GR-A71GR-A51GR-A51,5GR141,5GR141,5GR14
1,5GR-A111,5GR-A112GR-A202GR-A202GR-A202GR-A162GR-A202GR-A162GR142GR142GR14
2GR-A112,5-3GR-A202,5-3GR-14
3GR273GR27
3GR-A253GR-A253GR23
3GR-A203GR233GR233GR144GR404GR404GR344GR344GR344GR344GR314GR274GR314GR27
21,321,321,321,326,726,726,726,733,433,433,433,433,448,348,348,348,348,360,360,360,360,360,360,360,360,360,360,373,073,088,988,988,988,988,988,988,988,988,9114,3114,3114,3114,3114,3114,3114,3114,3114,3114,3
15,813,911,86,4
20,918,915,611,026,624,320,715,213,440,938,134,027,919,952,549,242,942,938,138,138,135,331,925,345,033,077,973,766,758,558,558,556,953,938,9102,397,297,292,187,380,180,180,179,374,3
50,850,850,850,850,850,850,850,850,850,850,850,850,879,479,479,479,479,492,192,192,192,192,192,192,192,192,192,1127,0127,0127,0127,0127,0127,0127,0127,0127,0127,0127,0152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4
44,544,544,544,544,544,544,544,544,544,544,544,544,560,360,360,360,360,369,969,969,969,969,969,969,969,969,969,982,682,682,682,682,682,682,682,682,682,682,692,192,192,192,192,192,192,192,192,192,1
44,5044,5044,5044,5044,5044,5044,5044,5044,5044,5044,5044,5044,5054,0054,0054,0054,0054,0050,8050,8050,8050,8050,8050,8050,8050,8050,8044,5063,5054,0063,5063,5063,5063,5063,5063,5063,5063,5054,0054,0054,0073,0073,0073,0073,0073,0073,0073,0073,00
38,138,138,138,138,138,138,138,138,138,138,138,138,160,360,360,360,360,373,073,073,073,073,073,073,073,073,073,0101,6101,6101,6101,6101,6101,6101,6101,6101,6101,6101,6127,0127,0127,0127,0127,0127,0127,0127,0127,0127,0
7,957,957,957,957,957,957,957,957,957,957,957,957,9511,1011,1011,10,12,7012,7011,1011,1011,1011,1011,1011,1011,1011,1011,1012,7012,7011,1012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,70
0,300,300,300,300,200,200,300,300,200,200,300,300,400,700,800,801,101,101,001,101,201,301,201,401,501,601,601,903,504,002,102,302,903,203,403,503,503,604,502,803,203,704,104,404,705,205,405,305,70
0,400,400,400,400,400,400,400,400,400,400,400,400,401,301,301,301,401,401,601,601,601,701,601,701,801,801,801,704,303,804,004,004,104,104,204,304,204,203,904,704,707,107,107,107,107,307,407,307,40
NOM.SIZE
G-LOKSIZE 50C 100C 150C 200C 250C 300C 350C
PRESSURE RATING (BAR)
2
3
4
6
8
10
12
14
16
18
20
24
B14B16B20
C20C23C25C27
D27D31D34D40
XF40XF46XF56
X862X864X867X872
X10H82X10H84X10H87X10H94X10H97
X12M102X12M106X12M112X12M120
A-P106A-P112A-P120A-P130
S112S120S130S134S137S140S152
U152U160U170
3V1603V1703V1803V192
3Y1923Y2003Y2103Y220
935853784
908822730535
823779606456
1240920640
617505416320
47142346
233176
427342264166
595532427280
763689551488443429278
390355316
385337316241
534516453365
887810744
862780693507
782740594432
1200881604
586479395304
447401328221167
405325250158
577505406265
724654523464421407264
371340299
363324300227
525518427342
866790726
841761676495
763722580422
1146826566
572468385296
436391320215163
395317244154
563493396259
707638510452411397257
354323287
345310292220
510503416335
840766704
816738655480
740700562409
1114796521
555453373287
423380311209158
383308237150
546478384251
685619495439398385250
335306273
331293284214
493482403324
797728669
775701622456
703665534389
1035722496
57431355273
401361295198150
364292225142
518454365239
651588470417378366237
311291258
312276269200
478452379307
742677622
721652579424
654618497362
995693465
490401330254
373335274185140
339272209132
482423339222
605547437388352340221
296276244
296261250184
433418347282
734670616
713645573420
647612491358
960639419
485396326251
369332272183138
335269207131
477418336220
599541433383348337218
289268236
289254248179
416402341276
-
C M G N
14 7
Pressure Temperature Rating Carbon Steel Buttweld Hubs
Blind Hubs
STANDARD SERIESClamp material-Low Alloy Steel
NOM.SIZE
G-LOKSIZE 50C 100C 150C 200C 250C 300C 350C
PRESSURE RATING (BAR)
1
1,5
2
3
4
5
6
8
10
12
1GR41GR51GR7
1GR11
1,5GR111,5GR14
2GR142GR162GR20
3GR203GR233GR253GR273GR31
4GR254GR274GR314GR344GR40
5GR315GR345GR405GR465GR52
6GR406GR466GR526GR62
8GR628GR728GR768GR82
10H8410H8710H94
12M10212M11212M120
984893572286
861485
751560414
835726529304212
818675576364198
868760656400209
843694507245
658378265174
427412346
458275201
934845543272
817461
713532393
792689502289201
777641547345188
824740623380199
800659481233
643359251165
406394318
441268196
911828530265
797450
696519383
773672490282196
758625533337184
804722608371194
781643470227
627350245161
395368284
413252185
884803514257
773436
675503372
750652475273190
735606517327178
780700590359188
757623455220
608339238156
388342265
398239166
839762488244
734414
641478353
712619451260181
698576491310169
741665560341179
719592433209
578322226148
367324245
381226151
781709454227
683385
596445328
662576420242168
649536457289157
689619521317166
669551402195
538300210138
342312323
353206141
773701449225
676381
590440325
655570415239166
643530452286156
682612515314164
662545398193
532297208137
326302218
321198128
NPS SCH. G-LOK
SIZE
PIPEO.D.
A B C D D1 E F KG KG
INSIDEDIAMETER
OUTSIDEDIAMETER
BW-HUBLENGTH
BL-HUBLENGTH
HUB BACKFACE
LIPTHICKNESS
BW-HUBWEIGHT
BL-HUBWEIGHT
45555556666666666888888888888888881010101010101010101010101010101010101212121212121212121212121212
22,2 mm4080
120160XXS
22,2 mm4080
120120160XXSXXS
25 mm28 mm30 mm
60100120140140160160
25 mm25 mm28 mm28 mm28 mm30 mm30 mm32 mm32 mm36 mm
60100120140140160
20 mm28 mm30 mm32 mm32 mm32 mm36 mm36 mm40 mm40 mm40 mm45 mm
60100120120140140160
25 mm31,8 mm32 mm36 mm40 mm45 mm50 mm
4GR275GR525GR525GR465GR405GR405GR406GR626GR626GR626GR566GR526GR526GR466GR466GR466GR408GR828GR768GR728GR768GR728GR728GR678GR728GR678GR72
8GR-A648GR62
8GR-A648GR62
8GR-A648GR628GR6210H9710H9410H9410H9410H8710H8410H8710H8410H8410H8410H8210H7210H8410H8210H8410H7610H7210H72
12M12012M11212M11212M10612M11212M10612M10212M11212M10212M10212M10212M8412M9412M87
114,3141,3141,3141,3141,3141,3141,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8
69,9128,2122,3115,9109,5103,396,9154,1146,3139,7139,7131,9124,5124,5118,3112,3108,3198,5188,9182,7177,9177,9173,1173,1169,1169,1163,1163,1163,1159,1159,1155,1155,1147,1247,6236,6230,2222,2222,2215,8233,0217,0213,0209,0209,0209,0201,0201,0193,0193,0193,0183,0295,2281,0273,0273,0266,6266,6257,2273,8260,2259,8251,8243,8233,8223,8
152,4190,5190,5190,5190,5190,5190,5235,0235,0235,0235,0235,0235,0235,0235,0235,0235,0292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1346,1346,1346,1346,1346,1346,13461,346,1346,1346,1346,1346,1346,1346,1346,1346,1346,1346,1406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4
92,1111,1111,1111,1111,1111,1111,1117,5117,5117,5117,5117,5117,5117,5117,5117,5117,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3
73,0073,0073,0073,0088,9088,9088,9073,0073,0073,0088,9088,9088,9085,7085,7085,7085,7076,2076,2088,9076,2088,9088,9088,9088,9088,9088,90108,00108,00108,00108,00108,00108,00108,0088,9095,3095,3095,30108,00108,00108,00108,00108,00108,00127,00127,00108,00127,00108,00127,00127,00127,0098,50108,00108,00133,40108,00133,40133,40108,00133,40133,40133,40142,90133,40142,90
127,0165,1165,1165,1165,1165,1165,1196,9196,9196,9196,9196,9196,9196,9196,9196,9196,9254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6
12,7015,8815,8815,8815,8815,8815,8819,0519,0519,0520,6320,6320,6320,6320,6320,6320,6319,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7534,9331,7531,7534,9331,7534,9331,7534,9334,9334,9334,9334,9334,9334,93
5,905,405,907,709,209,90
10,509,309,90
10,1012,7014,5015,3016,3017,1017,7019,0014,5018,5021,8019,1022,4022,9024,7023,1025,2023,1027,5028,6028,0029,4028,3030,1031,1025,9030,7031,8032,5037,3040,6034,3040,3041,2042,0043,3044,2043,0044,8043,3048,8050,0053,0038,7048,2050,0055,0051,0057,0063,0050,0062,0062,0064,0071,0074,0080,00
7,4011,1011,1011,5014,7014,7014,7016,0016,0016,0021,1021,4021,4021,1021,1021,1021,6026,5027,2033,0027,3033,0033,0033,5033,0033,5033,0041,6042,1041,6042,1041,6042,1042,1045,2049,3049,3049,3057,0058,0057,0058,0058,0058,0069,0070,0058,0069,0058,0069,0070,0070,0072,0080,0080,00102,0080,00102,00103,00100,00103,00103,00103,00113,00104,00113,00
-
C M G N
8 13
Heavy Duty Buttweld HubsHeavy Duty Blind Hubs
Other Configurations
T-Let Hubs Nozzle Hub
Tee Elbow
Spade / Spacers Orifice Seal
Blind Seal Transition Seal
The G-LOK heavy duty series is also part ofour standard connector range. Lightweightconnectors in series X14, X16, X18, X20 andX24 are available on request.
HEAVY DUTY HUBS
NPS SCH. G-LOK
SIZE
PIPEO.D.
A B C D D1 E F KG KG
INSIDEDIAMETER
OUTSIDEDIAMETER
BW-HUBLENGTH
BL-HUBLENGTH
HUB BACKFACE
LIPTHICKNESS
BW-HUBWEIGHT
BL-HUBWEIGHT
222233334444444666688888810101010121212121414141414
4080160XXS4080160XXS4080120160XXS
17,5 mm20 mm
XXS32 mm28 mm30 mm25 mm25 mm28 mm30 mm32 mm36 mm20 mm36 mm36 mm40 mm25 mm36 mm45 mm50 mm
60100120140160
B-A20B-A20B-A16B14C27C27
C-A25C23D40D40D34D34D27D31D27ZX52
ZX-A42G46G46
X8GR72X8GR67
X8GR-A64X8GR62
X8GR-A64X8GR62X10H87X10H84X10H82X10H76
X12M112X12M102X12M94X12M87A-P130A-P130A-P120A-P120A-P112
60,360,360,360,388,988,988,988,9114,3114,3114,3114,3114,3114,3114,3168,3168,3168,3168,3219,1219,1219,1219,1219,1219,1273,0273,0273,0273,0323,8323,8323,8323,8355,6355,6355,6355,6355,6
52,549,242,938,177,973,766,758,5102,397,292,187,380,179,374,3124,5104,3112,3108,3169,1169,1163,1159,1155,1147,1233,0201,0201,0193,0273,8251,8233,8223,8325,4308,0300,0292,0284,2
120,7120,7120,7120,7139,7139,7139,7139,7171,5171,5171,5171,5171,5171,5171,5268,0268,0292,1292,1292,1292,1292,1292,1292,1292,1346,1346,1346,1346,1406,4406,4406,4406,4469,9469,9469,9469,9469,9
82,682,682,682,688,988,988,988,9101,6101,6101,6101,6101,6101,6101,6196,0196,0136,5136,5136,5136,5136,5136,5136,5152,4152,4152,4152,4168,3168,3168,3168,3184,2184,2184,2184,2184,2184,2
63,5063,5063,5063,5066,7066,7066,7066,7073,0073,0073,0073,0073,0073,0073,0095,3095,30108,00108,0088,9088,90108,00108,00108,00108,00108,00108,00127,00127,00108,00133,40133,40142,90152,40152,40152,40152,40152,40
95,395,395,395,3114,3114,3114,3114,3146,1146,1146,1146,1146,1146,1146,1230,0230,0241,3241,3254,0254,0254,0254,0254,0254,0295,3295,3295,3295,3355,6355,6355,6355,6419,1419,1419,1419,1419,1
15,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8821,1421,1427,0027,0019,0519,0519,0519,0519,0519,0531,7531,7531,7531,7531,7534,9334,9334,9330,1630,1631,7531,7528,57
2,802,903,203,403,303,604,204,705,405,806,807,208,208,108,6032,5038,8032,0032,4023,1025,2027,5029,4028,3031,1034,3043,0044,8048,8050,0064,0074,0080,0064,0069,0083,0085,0093,00
3,703,703,803,905,105,105,305,508,708,709,109,109,509,409,5031,0032,1034,9034,9033,0033,5041,6042,1041,6042,1057,0069,0069,0069,00100,00103,00104,00113,00158,00158,00161,00161,00162,00
-
C M G N
Transition Hubs Threaded Hubs Socket Weld Hubs
Weld Overlaid Hub
Shroud Hubs Adapter Hubs Pressure - Tapped Hubs12 9
Other Configurations Heavy Duty Buttweld Hubs
Heavy Duty Blind Hubs
G-LOK connectors are higly versatile and can be used inmany different applications. In addition to the standardproducts, there are many other configurations in theG-LOK range, some of wich are illustrated below.316 stainless steel, inconel 625, hastelloy C276 weldoverlaid hub are also available for corrosive service.
NPS SCH. G-LOK
SIZE
PIPEO.D.
A B C D D1 E F KG KG
INSIDEDIAMETER
OUTSIDEDIAMETER
BW-HUBLENGTH
BL-HUBLENGTH
HUB BACKFACE
LIPTHICKNESS
BW-HUBWEIGHT
BL-HUBWEIGHT
14141414141414141416161616161616161616161616161818181818181818181818182020202020202020202424242424242424
25 mm34,9 mm34,9 mm36 mm38 mm40 mm45 mm55 mm60 mm
60100120120140140160
28 mm34,9 mm40 mm45 mm50 mm55 mm65 mm
60100120160160
32 mm34,9 mm44 mm45 mm50 mm55 mm60 mm
4060
100120160
34,9 mm55 mm60 mm65 mm
4060
100120160
65 mm70 mm75 mm
A-P120A-P112A-P120A-P112A-P112A-P112A-P102A-P97A-P94S152S140S140S137S140S137S130S140
S-A134S130S130S120S120S112U170U160U152U152U144U152U152U152U152U152U140
U-A1343V2103V1923V1803V1703V1703V1803V1603V1523V1523Y2443Y2203Y2103Y2103Y2003Y1923Y1803Y180
355,6355,6355,6355,6355,6355,6355,6355,6355,6406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4457,2457,2457,2457,2457,2457,2457,2457,2457,2457,2457,2457,2508,0508,0508,0508,0508,0508,0508,0508,0508,0609,6609,6609,6609,6609,6609,6609,6609,6
305,6285,8285,8283,6279,6275,6265,6245,6235,6373,0354,0344,6344,6333,4333,4325,4350,4336,6326,4316,4306,4296,4276,4419,2398,4387,4366,8366,8393,2387,4369,2367,2357,2347,2337,2477,8466,8443,0431,8408,0438,2398,0388,0378,0574,8560,4531,8517,6490,6479,6469,6459,6
469,9469,9469,9469,9469,9469,9469,9469,9469,9533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4635,0635,0635,0635,0635,0635,0635,0635,0635,0635,0635,0635,0660,4660,4660,4660,4660,4660,4660,4660,4660,4793,8793,8793,8793,8793,8793,8793,8793,8
184,2184,2184,2184,2184,2184,2184,2184,2184,2200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0222,2222,2222,2222,2222,2222,2222,2222,2222,2222,2222,2228,6228,6228,6228,6228,6228,6228,6228,6228,6254,0254,0254,0254,0254,0254,0254,0254,0
152,40152,40152,40152,40152,40152,40146,00146,00146,00162,00162,00162,00162,00162,00162,00178,00162,00178,00178,00178,00190,00190,00190,00181,00184,00184,00184,00184,00184,00184,00184,00184,00184,00184,00184,00133,40159,00181,00187,00187,00181,00178,00178,00178,00181,00245,00203,00203,00203,00203,00203,00203,00
419,1419,1419,1419,1419,1419,1419,1419,1419,1482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6584,2584,2584,2584,2584,2584,2584,2584,2584,2584,2584,2584,2609,6609,6609,6609,6609,6609,6609,6609,6609,6743,0743,0743,0743,0743,0743,0743,0743,0
31,7528,5731,7528,5728,5728,5731,7531,7531,7542,8842,8842,8841,2842,8841,2842,8842,8842,8842,8842,8844,4744,4741,2841,2841,2841,2841,2841,2841,2841,2841,2841,2841,2841,2841,2831,7531,7531,7531,7531,7531,7531,7531,7531,7541,2841,2841,2841,2841,2841,2841,2841,28
80,0092,0087,0093,0095,0096,00107,00117,00122,0099,00121,00126,00127,00129,00131,00144,00123,00135,00144,00148,00162,00166,00179,00176,00203,00218,00230,00239,00213,00218,00229,00230,00232,00256,00266,0093,00156,00193,00215,00229,00196,00252,00266,00273,00242,00325,00373,00387,00430,00453,00457,00488,00
161,00162,00161,00162,00162,00162,00158,00158,00159,00225,00228,00228,00228,00228,00228,00254,00228,00253,00254,00254,00274,00274,00275,00366,00380,00382,00382,00384,00382,00382,00382,00382,00382,00385,00387,00265,00337,00393,00411,00411,00393,00397,00399,00399,00564,00796,00658,00658,00669,00672,00677,00677,00
-
C M G N
12,7915,9623,0825,5528,7338,1040,9047,7153,2461,2169,1578,7183,5094,66
104,32107,50121,85136,14140,20147,25156,50167,60177,14186,70199,70212,10218,40227,90243,80253,30262,90275,60288,30298,45308,30314,70332,20344,90354,40357,60370,30389,30408,40433,50459,10490,70509,70535,30544,80561,10592,90625,10663,60676,30714,90746,60
A4A5A78
A111314
A16A2023
A2527313440
A424652545662
A646772768284879497
102106112116120122130
A134137140144152160170180192200210213220232244260264280292
25,4027,8034,9040,8044,0060,3066,7068,3082,5088,90101,60108,00114,30127,00139,70168,30157,20168,30173,10190,50200,00222,40222,30241,30254,00257,20282,60282,60304,80304,80304,80323,90358,80358,80352,40358,80381,00393,70419,10419,10431,80450,90469,90495,30520,70558,80577,90609,60619,10635,00666,80704,90749,30762,00797,00819,20
9,539,539,539,539,539,62
14,2915,8719,0519,0519,0519,0519,0519,0525,4025,4025,4025,4025,4025,4034,9334,9334,9334,9334,9334,9334,9334,9334,9334,9334,9334,9341,2834,9334,9334,9338,1038,1041,2838,1038,1038,1038,1044,5044,5044,5044,5050,8050,8050,8050,8050,8050,8050,8050,8050,80
3,173,173,173,173,173,176,356,356,356,356,356,356,356,356,346,346,346,346,346,349,539,539,539,539,539,539,539,539,539,539,539,53
15,889,539,539,53
12,7012,7015,8812,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,70
3,183,183,183,183,183,223,974,766,356,356,356,356,356,359,539,539,539,539,539,53
12,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7015,9015,9015,9015,9019,0519,0519,0519,0519,0519,0519,0519,0519,05
0,010,010,020,030,030,050,130,120,200,200,300,300,300,400,500,900,600,600,710,801,501,901,702,002,202,002,702,402,802,602,302,705,503,262,702,703,904,106,205,005,205,505,706,707,108,108,4010,2010,4010,5011,1012,2013,5013,7013,9013,2010 11
Seal Ring
Clamp
G-LOK sealrings are available inthe following standard materials:AISI 4140, A564 GR 630 (17-4PH) and Alloy 718.They can also be supplied in othermaterials on request. They arecoated with either PTFE or MOS2 toprovide lubrication during make-up.Sealrings manufactured of mate-rials or with coatings other than
those specified in the table can beavailable to meet specific serviceconditions.For applications greater than 400C, consult Galperti Engineering foradvice on materials and coatings.All G-LOK sealrings meet thehardness requirements of NACE MR-01-75.For easy of identification G-LOKsealrings are coloured.
G-LOK clamps are manufactured in lowalloy steel or stainless steel.Other material grades and additional si-zes can be supplied on request. Low alloysteel clamps are coated with a green indu-strial paint system for standard supply.Clamps are supplied complete with studbolting in either A193 B7, A320 L7, orA193 B8 grades. Bolting is supplied with hotdeep galvanized as standard, UNC/8UN th-read series, and spherically faced heavy hexnuts. Other coating and bolt supply optionsare available on request. Spherical washerare also available on request.Refer to page 5 for bolting and assemblyprocedures.
SIZE A C D E F WEIGHT KG
SEAL RINGS
CL A B C D E F G H I J K WEIGHT
STANDARD CLAMPS
11,5234568
10H12M
42,968,381,0111,1136,5174,6212,8269,9311,2371,5
81,0127,0146,0190,5215,9260,3320,7387,4463,6558,8
71,4114,3128,6174,6206,4247,6304,8368,3453,6527,3
108,0165,1190,0234,0266,7314,3381,0463,6558,8654,1
34,950,850,860,360,376,288,990,4143,0149,4
25,436,541,252,361,973,076,385,9117,6117,6
67,097,0111,0136,0156,0184,0217,0256,0316,0364,0
1/25/83/43/47/81
1-1/81-1/41-5/81-3/4
88,90127,0133,4152,4177,8203,2238,1266,7358,8406,4
58,779,490,188,9104,8112,7122,2149,2187,5190,5
31,841,346,046,052,458,761,973,292,295,3
1,704,606,4010,0014,0022,0034,0051,00105,00140,00
CL A B C D E F G H I J K WEIGHT
HEAVY DUTY CLAMPS
BCDEFXFZXGXGX8
X10HX12MA-P5PSUV3V5VY
3Y
104,8123,8155,6174,6212,8212,7246,0257,2257,2269,7311,2371,5435,0435,0500,1601,6627,0627,0627,0760,4760,4
184,2203,2242,9260,4320,7343,0410,0406,4406,4412,8495,3590,6635,0711,2765,2860,4762,0889,0952,4984,3
1137,6
174,6196,8228,6247,6304,8327,0388,0375,0381,0384,0463,6546,1584,2650,9698,5793,8804,9836,6887,4
952,501079,5
228,6254,0295,8314,3381,0406,0485,0477,0508,0482,6590,6692,2736,6838,2892,2990,6870,0997,0
1079,51111,31299,2
73,076,276,276,288,9
102,0125,0116,0127,0104,6165,1184,0154,0203,2228,6222,3165,1203,2247,7228,6322,3
58,761,968,373,076,383,0105,089,0114,385,9119,0131,7114,3142,9149,2165,1233,4152,4177,8220,7222,3
141,0151,0175,0184,0217,0234,0273,0271,0284,0271,0338,0398,0403,0465,0500,0541,0535,0563,0593,0642,0711,0
7/87/811
1-1/81-1/41-1/41-3/81-3/81-3/81-3/4
22
2-1/22-1/22-1/22-1/42-1/42-1/22-3/42-1/4
171,5177,8203,2203,2238,1279,4217,5279,4330,2279,4406,7469,9419,1508,0558,8558,8685,8609,6
609,60730,3762,0
99,9103,2112,7112,7122,2130,0150,0152,4152,4152,4190,5216,0209,5266,7266,7279,4235,0235,0279,4279,4362,0
50,852,458,758,761,970,075,079,479,482,695,3
114,3108,0139,7139,7139,7127,0127,0139,7152,4190,5
13,0016,0020,0022,0034,0048,0090,0060,0071,0059,00
145,00225,00175,00360,00440,00450,00330,00440,00720,00570,001230,00
-
C M G N
12,7915,9623,0825,5528,7338,1040,9047,7153,2461,2169,1578,7183,5094,66
104,32107,50121,85136,14140,20147,25156,50167,60177,14186,70199,70212,10218,40227,90243,80253,30262,90275,60288,30298,45308,30314,70332,20344,90354,40357,60370,30389,30408,40433,50459,10490,70509,70535,30544,80561,10592,90625,10663,60676,30714,90746,60
A4A5A78
A111314
A16A2023
A2527313440
A424652545662
A646772768284879497
102106112116120122130
A134137140144152160170180192200210213220232244260264280292
25,4027,8034,9040,8044,0060,3066,7068,3082,5088,90101,60108,00114,30127,00139,70168,30157,20168,30173,10190,50200,00222,40222,30241,30254,00257,20282,60282,60304,80304,80304,80323,90358,80358,80352,40358,80381,00393,70419,10419,10431,80450,90469,90495,30520,70558,80577,90609,60619,10635,00666,80704,90749,30762,00797,00819,20
9,539,539,539,539,539,62
14,2915,8719,0519,0519,0519,0519,0519,0525,4025,4025,4025,4025,4025,4034,9334,9334,9334,9334,9334,9334,9334,9334,9334,9334,9334,9341,2834,9334,9334,9338,1038,1041,2838,1038,1038,1038,1044,5044,5044,5044,5050,8050,8050,8050,8050,8050,8050,8050,8050,80
3,173,173,173,173,173,176,356,356,356,356,356,356,356,356,346,346,346,346,346,349,539,539,539,539,539,539,539,539,539,539,539,53
15,889,539,539,53
12,7012,7015,8812,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,70
3,183,183,183,183,183,223,974,766,356,356,356,356,356,359,539,539,539,539,539,53
12,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7015,9015,9015,9015,9019,0519,0519,0519,0519,0519,0519,0519,0519,05
0,010,010,020,030,030,050,130,120,200,200,300,300,300,400,500,900,600,600,710,801,501,901,702,002,202,002,702,402,802,602,302,705,503,262,702,703,904,106,205,005,205,505,706,707,108,108,4010,2010,4010,5011,1012,2013,5013,7013,9013,2010 11
Seal Ring
Clamp
G-LOK sealrings are available inthe following standard materials:AISI 4140, A564 GR 630 (17-4PH) and Alloy 718.They can also be supplied in othermaterials on request. They arecoated with either PTFE or MOS2 toprovide lubrication during make-up.Sealrings manufactured of mate-rials or with coatings other than
those specified in the table can beavailable to meet specific serviceconditions.For applications greater than 400C, consult Galperti Engineering foradvice on materials and coatings.All G-LOK sealrings meet thehardness requirements of NACE MR-01-75.For easy of identification G-LOKsealrings are coloured.
G-LOK clamps are manufactured in lowalloy steel or stainless steel.Other material grades and additional si-zes can be supplied on request. Low alloysteel clamps are coated with a green indu-strial paint system for standard supply.Clamps are supplied complete with studbolting in either A193 B7, A320 L7, orA193 B8 grades. Bolting is supplied with hotdeep galvanized as standard, UNC/8UN th-read series, and spherically faced heavy hexnuts. Other coating and bolt supply optionsare available on request. Spherical washerare also available on request.Refer to page 5 for bolting and assemblyprocedures.
SIZE A C D E F WEIGHT KG
SEAL RINGS
CL A B C D E F G H I J K WEIGHT
STANDARD CLAMPS
11,5234568
10H12M
42,968,381,0111,1136,5174,6212,8269,9311,2371,5
81,0127,0146,0190,5215,9260,3320,7387,4463,6558,8
71,4114,3128,6174,6206,4247,6304,8368,3453,6527,3
108,0165,1190,0234,0266,7314,3381,0463,6558,8654,1
34,950,850,860,360,376,288,990,4143,0149,4
25,436,541,252,361,973,076,385,9117,6117,6
67,097,0111,0136,0156,0184,0217,0256,0316,0364,0
1/25/83/43/47/81
1-1/81-1/41-5/81-3/4
88,90127,0133,4152,4177,8203,2238,1266,7358,8406,4
58,779,490,188,9104,8112,7122,2149,2187,5190,5
31,841,346,046,052,458,761,973,292,295,3
1,704,606,4010,0014,0022,0034,0051,00105,00140,00
CL A B C D E F G H I J K WEIGHT
HEAVY DUTY CLAMPS
BCDEFXFZXGXGX8
X10HX12MA-P5PSUV3V5VY
3Y
104,8123,8155,6174,6212,8212,7246,0257,2257,2269,7311,2371,5435,0435,0500,1601,6627,0627,0627,0760,4760,4
184,2203,2242,9260,4320,7343,0410,0406,4406,4412,8495,3590,6635,0711,2765,2860,4762,0889,0952,4984,3
1137,6
174,6196,8228,6247,6304,8327,0388,0375,0381,0384,0463,6546,1584,2650,9698,5793,8804,9836,6887,4
952,501079,5
228,6254,0295,8314,3381,0406,0485,0477,0508,0482,6590,6692,2736,6838,2892,2990,6870,0997,0
1079,51111,31299,2
73,076,276,276,288,9
102,0125,0116,0127,0104,6165,1184,0154,0203,2228,6222,3165,1203,2247,7228,6322,3
58,761,968,373,076,383,0105,089,0114,385,9119,0131,7114,3142,9149,2165,1233,4152,4177,8220,7222,3
141,0151,0175,0184,0217,0234,0273,0271,0284,0271,0338,0398,0403,0465,0500,0541,0535,0563,0593,0642,0711,0
7/87/811
1-1/81-1/41-1/41-3/81-3/81-3/81-3/4
22
2-1/22-1/22-1/22-1/42-1/42-1/22-3/42-1/4
171,5177,8203,2203,2238,1279,4217,5279,4330,2279,4406,7469,9419,1508,0558,8558,8685,8609,6
609,60730,3762,0
99,9103,2112,7112,7122,2130,0150,0152,4152,4152,4190,5216,0209,5266,7266,7279,4235,0235,0279,4279,4362,0
50,852,458,758,761,970,075,079,479,482,695,3
114,3108,0139,7139,7139,7127,0127,0139,7152,4190,5
13,0016,0020,0022,0034,0048,0090,0060,0071,0059,00
145,00225,00175,00360,00440,00450,00330,00440,00720,00570,001230,00
-
C M G N
Transition Hubs Threaded Hubs Socket Weld Hubs
Weld Overlaid Hub
Shroud Hubs Adapter Hubs Pressure - Tapped Hubs12 9
Other Configurations Heavy Duty Buttweld Hubs
Heavy Duty Blind Hubs
G-LOK connectors are higly versatile and can be used inmany different applications. In addition to the standardproducts, there are many other configurations in theG-LOK range, some of wich are illustrated below.316 stainless steel, inconel 625, hastelloy C276 weldoverlaid hub are also available for corrosive service.
NPS SCH. G-LOK
SIZE
PIPEO.D.
A B C D D1 E F KG KG
INSIDEDIAMETER
OUTSIDEDIAMETER
BW-HUBLENGTH
BL-HUBLENGTH
HUB BACKFACE
LIPTHICKNESS
BW-HUBWEIGHT
BL-HUBWEIGHT
14141414141414141416161616161616161616161616161818181818181818181818182020202020202020202424242424242424
25 mm34,9 mm34,9 mm36 mm38 mm40 mm45 mm55 mm60 mm
60100120120140140160
28 mm34,9 mm40 mm45 mm50 mm55 mm65 mm
60100120160160
32 mm34,9 mm44 mm45 mm50 mm55 mm60 mm
4060
100120160
34,9 mm55 mm60 mm65 mm
4060
100120160
65 mm70 mm75 mm
A-P120A-P112A-P120A-P112A-P112A-P112A-P102A-P97A-P94S152S140S140S137S140S137S130S140
S-A134S130S130S120S120S112U170U160U152U152U144U152U152U152U152U152U140
U-A1343V2103V1923V1803V1703V1703V1803V1603V1523V1523Y2443Y2203Y2103Y2103Y2003Y1923Y1803Y180
355,6355,6355,6355,6355,6355,6355,6355,6355,6406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4457,2457,2457,2457,2457,2457,2457,2457,2457,2457,2457,2457,2508,0508,0508,0508,0508,0508,0508,0508,0508,0609,6609,6609,6609,6609,6609,6609,6609,6
305,6285,8285,8283,6279,6275,6265,6245,6235,6373,0354,0344,6344,6333,4333,4325,4350,4336,6326,4316,4306,4296,4276,4419,2398,4387,4366,8366,8393,2387,4369,2367,2357,2347,2337,2477,8466,8443,0431,8408,0438,2398,0388,0378,0574,8560,4531,8517,6490,6479,6469,6459,6
469,9469,9469,9469,9469,9469,9469,9469,9469,9533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4533,4635,0635,0635,0635,0635,0635,0635,0635,0635,0635,0635,0635,0660,4660,4660,4660,4660,4660,4660,4660,4660,4793,8793,8793,8793,8793,8793,8793,8793,8
184,2184,2184,2184,2184,2184,2184,2184,2184,2200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0200,0222,2222,2222,2222,2222,2222,2222,2222,2222,2222,2222,2228,6228,6228,6228,6228,6228,6228,6228,6228,6254,0254,0254,0254,0254,0254,0254,0254,0
152,40152,40152,40152,40152,40152,40146,00146,00146,00162,00162,00162,00162,00162,00162,00178,00162,00178,00178,00178,00190,00190,00190,00181,00184,00184,00184,00184,00184,00184,00184,00184,00184,00184,00184,00133,40159,00181,00187,00187,00181,00178,00178,00178,00181,00245,00203,00203,00203,00203,00203,00203,00
419,1419,1419,1419,1419,1419,1419,1419,1419,1482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6482,6584,2584,2584,2584,2584,2584,2584,2584,2584,2584,2584,2584,2609,6609,6609,6609,6609,6609,6609,6609,6609,6743,0743,0743,0743,0743,0743,0743,0743,0
31,7528,5731,7528,5728,5728,5731,7531,7531,7542,8842,8842,8841,2842,8841,2842,8842,8842,8842,8842,8844,4744,4741,2841,2841,2841,2841,2841,2841,2841,2841,2841,2841,2841,2841,2831,7531,7531,7531,7531,7531,7531,7531,7531,7541,2841,2841,2841,2841,2841,2841,2841,28
80,0092,0087,0093,0095,0096,00107,00117,00122,0099,00121,00126,00127,00129,00131,00144,00123,00135,00144,00148,00162,00166,00179,00176,00203,00218,00230,00239,00213,00218,00229,00230,00232,00256,00266,0093,00156,00193,00215,00229,00196,00252,00266,00273,00242,00325,00373,00387,00430,00453,00457,00488,00
161,00162,00161,00162,00162,00162,00158,00158,00159,00225,00228,00228,00228,00228,00228,00254,00228,00253,00254,00254,00274,00274,00275,00366,00380,00382,00382,00384,00382,00382,00382,00382,00382,00385,00387,00265,00337,00393,00411,00411,00393,00397,00399,00399,00564,00796,00658,00658,00669,00672,00677,00677,00
-
C M G N
8 13
Heavy Duty Buttweld HubsHeavy Duty Blind Hubs
Other Configurations
T-Let Hubs Nozzle Hub
Tee Elbow
Spade / Spacers Orifice Seal
Blind Seal Transition Seal
The G-LOK heavy duty series is also part ofour standard connector range. Lightweightconnectors in series X14, X16, X18, X20 andX24 are available on request.
HEAVY DUTY HUBS
NPS SCH. G-LOK
SIZE
PIPEO.D.
A B C D D1 E F KG KG
INSIDEDIAMETER
OUTSIDEDIAMETER
BW-HUBLENGTH
BL-HUBLENGTH
HUB BACKFACE
LIPTHICKNESS
BW-HUBWEIGHT
BL-HUBWEIGHT
222233334444444666688888810101010121212121414141414
4080160XXS4080160XXS4080120160XXS
17,5 mm20 mm
XXS32 mm28 mm30 mm25 mm25 mm28 mm30 mm32 mm36 mm20 mm36 mm36 mm40 mm25 mm36 mm45 mm50 mm
60100120140160
B-A20B-A20B-A16B14C27C27
C-A25C23D40D40D34D34D27D31D27ZX52
ZX-A42G46G46
X8GR72X8GR67
X8GR-A64X8GR62
X8GR-A64X8GR62X10H87X10H84X10H82X10H76
X12M112X12M102X12M94X12M87A-P130A-P130A-P120A-P120A-P112
60,360,360,360,388,988,988,988,9114,3114,3114,3114,3114,3114,3114,3168,3168,3168,3168,3219,1219,1219,1219,1219,1219,1273,0273,0273,0273,0323,8323,8323,8323,8355,6355,6355,6355,6355,6
52,549,242,938,177,973,766,758,5102,397,292,187,380,179,374,3124,5104,3112,3108,3169,1169,1163,1159,1155,1147,1233,0201,0201,0193,0273,8251,8233,8223,8325,4308,0300,0292,0284,2
120,7120,7120,7120,7139,7139,7139,7139,7171,5171,5171,5171,5171,5171,5171,5268,0268,0292,1292,1292,1292,1292,1292,1292,1292,1346,1346,1346,1346,1406,4406,4406,4406,4469,9469,9469,9469,9469,9
82,682,682,682,688,988,988,988,9101,6101,6101,6101,6101,6101,6101,6196,0196,0136,5136,5136,5136,5136,5136,5136,5152,4152,4152,4152,4168,3168,3168,3168,3184,2184,2184,2184,2184,2184,2
63,5063,5063,5063,5066,7066,7066,7066,7073,0073,0073,0073,0073,0073,0073,0095,3095,30108,00108,0088,9088,90108,00108,00108,00108,00108,00108,00127,00127,00108,00133,40133,40142,90152,40152,40152,40152,40152,40
95,395,395,395,3114,3114,3114,3114,3146,1146,1146,1146,1146,1146,1146,1230,0230,0241,3241,3254,0254,0254,0254,0254,0254,0295,3295,3295,3295,3355,6355,6355,6355,6419,1419,1419,1419,1419,1
15,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8815,8821,1421,1427,0027,0019,0519,0519,0519,0519,0519,0531,7531,7531,7531,7531,7534,9334,9334,9330,1630,1631,7531,7528,57
2,802,903,203,403,303,604,204,705,405,806,807,208,208,108,6032,5038,8032,0032,4023,1025,2027,5029,4028,3031,1034,3043,0044,8048,8050,0064,0074,0080,0064,0069,0083,0085,0093,00
3,703,703,803,905,105,105,305,508,708,709,109,109,509,409,5031,0032,1034,9034,9033,0033,5041,6042,1041,6042,1057,0069,0069,0069,00100,00103,00104,00113,00158,00158,00161,00161,00162,00
-
C M G N
14 7
Pressure Temperature Rating Carbon Steel Buttweld Hubs
Blind Hubs
STANDARD SERIESClamp material-Low Alloy Steel
NOM.SIZE
G-LOKSIZE 50C 100C 150C 200C 250C 300C 350C
PRESSURE RATING (BAR)
1
1,5
2
3
4
5
6
8
10
12
1GR41GR51GR7
1GR11
1,5GR111,5GR14
2GR142GR162GR20
3GR203GR233GR253GR273GR31
4GR254GR274GR314GR344GR40
5GR315GR345GR405GR465GR52
6GR406GR466GR526GR62
8GR628GR728GR768GR82
10H8410H8710H94
12M10212M11212M120
984893572286
861485
751560414
835726529304212
818675576364198
868760656400209
843694507245
658378265174
427412346
458275201
934845543272
817461
713532393
792689502289201
777641547345188
824740623380199
800659481233
643359251165
406394318
441268196
911828530265
797450
696519383
773672490282196
758625533337184
804722608371194
781643470227
627350245161
395368284
413252185
884803514257
773436
675503372
750652475273190
735606517327178
780700590359188
757623455220
608339238156
388342265
398239166
839762488244
734414
641478353
712619451260181
698576491310169
741665560341179
719592433209
578322226148
367324245
381226151
781709454227
683385
596445328
662576420242168
649536457289157
689619521317166
669551402195
538300210138
342312323
353206141
773701449225
676381
590440325
655570415239166
643530452286156
682612515314164
662545398193
532297208137
326302218
321198128
NPS SCH. G-LOK
SIZE
PIPEO.D.
A B C D D1 E F KG KG
INSIDEDIAMETER
OUTSIDEDIAMETER
BW-HUBLENGTH
BL-HUBLENGTH
HUB BACKFACE
LIPTHICKNESS
BW-HUBWEIGHT
BL-HUBWEIGHT
45555556666666666888888888888888881010101010101010101010101010101010101212121212121212121212121212
22,2 mm4080
120160XXS
22,2 mm4080
120120160XXSXXS
25 mm28 mm30 mm
60100120140140160160
25 mm25 mm28 mm28 mm28 mm30 mm30 mm32 mm32 mm36 mm
60100120140140160
20 mm28 mm30 mm32 mm32 mm32 mm36 mm36 mm40 mm40 mm40 mm45 mm
60100120120140140160
25 mm31,8 mm32 mm36 mm40 mm45 mm50 mm
4GR275GR525GR525GR465GR405GR405GR406GR626GR626GR626GR566GR526GR526GR466GR466GR466GR408GR828GR768GR728GR768GR728GR728GR678GR728GR678GR72
8GR-A648GR62
8GR-A648GR62
8GR-A648GR628GR6210H9710H9410H9410H9410H8710H8410H8710H8410H8410H8410H8210H7210H8410H8210H8410H7610H7210H72
12M12012M11212M11212M10612M11212M10612M10212M11212M10212M10212M10212M8412M9412M87
114,3141,3141,3141,3141,3141,3141,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1219,1273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0273,0323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8323,8
69,9128,2122,3115,9109,5103,396,9154,1146,3139,7139,7131,9124,5124,5118,3112,3108,3198,5188,9182,7177,9177,9173,1173,1169,1169,1163,1163,1163,1159,1159,1155,1155,1147,1247,6236,6230,2222,2222,2215,8233,0217,0213,0209,0209,0209,0201,0201,0193,0193,0193,0183,0295,2281,0273,0273,0266,6266,6257,2273,8260,2259,8251,8243,8233,8223,8
152,4190,5190,5190,5190,5190,5190,5235,0235,0235,0235,0235,0235,0235,0235,0235,0235,0292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1292,1346,1346,1346,1346,1346,1346,13461,346,1346,1346,1346,1346,1346,1346,1346,1346,1346,1346,1406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4406,4
92,1111,1111,1111,1111,1111,1111,1117,5117,5117,5117,5117,5117,5117,5117,5117,5117,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5136,5152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3168,3
73,0073,0073,0073,0088,9088,9088,9073,0073,0073,0088,9088,9088,9085,7085,7085,7085,7076,2076,2088,9076,2088,9088,9088,9088,9088,9088,90108,00108,00108,00108,00108,00108,00108,0088,9095,3095,3095,30108,00108,00108,00108,00108,00108,00127,00127,00108,00127,00108,00127,00127,00127,0098,50108,00108,00133,40108,00133,40133,40108,00133,40133,40133,40142,90133,40142,90
127,0165,1165,1165,1165,1165,1165,1196,9196,9196,9196,9196,9196,9196,9196,9196,9196,9254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0254,0295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3295,3355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6355,6
12,7015,8815,8815,8815,8815,8815,8819,0519,0519,0520,6320,6320,6320,6320,6320,6320,6319,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0519,0531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7531,7534,9331,7531,7534,9331,7534,9331,7534,9334,9334,9334,9334,9334,9334,93
5,905,405,907,709,209,90
10,509,309,90
10,1012,7014,5015,3016,3017,1017,7019,0014,5018,5021,8019,1022,4022,9024,7023,1025,2023,1027,5028,6028,0029,4028,3030,1031,1025,9030,7031,8032,5037,3040,6034,3040,3041,2042,0043,3044,2043,0044,8043,3048,8050,0053,0038,7048,2050,0055,0051,0057,0063,0050,0062,0062,0064,0071,0074,0080,00
7,4011,1011,1011,5014,7014,7014,7016,0016,0016,0021,1021,4021,4021,1021,1021,1021,6026,5027,2033,0027,3033,0033,0033,5033,0033,5033,0041,6042,1041,6042,1041,6042,1042,1045,2049,3049,3049,3057,0058,0057,0058,0058,0058,0069,0070,0058,0069,0058,0069,0070,0070,0072,0080,0080,00102,0080,00102,00103,00100,00103,00103,00103,00113,00104,00113,00
-
C M G N
6 15
Buttweld HubsBlind Hubs
Pressure Temperature Rating Carbon Steel
DesignationsThe G-LOK connector designation (exam-ple 4 GR 40) designates the correct hub,clamp, bolting and sealring sizes. The firstnumber (4 in the example) refers to thehub and clamp size. The correct clamp canbe located in the clamp table on page 11.The second number in the designation(40 in the example) refers to the sealringsize. The correct sealring can be located inthe sealring table on page 10.
G-LOK blind hubs are designed to savespace.Available for all standard size G-LOK con-nectors, they can carry the full basic pres-sure rating of the G-LOK connector.They can also be used as closures for pres-sure vessels and heat exchangers, and canbe drilled and tapped to incorporate instru-mentation, and customised to fit your speci-fic requirements.
HEAVY DUTY SERIESClamp material-Low Alloy Steel
NPS SCH. G-LOK
SIZE
PIPEO.D.
A B C D D1 E F KG KG
INSIDEDIAMETER
OUTSIDEDIAMETER
BW-HUBLENGTH
BL-HUBLENGTH
HUB BACKFACE
LIPTHICKNESS
BW-HUBWEIGHT
BL-HUBWEIGHT
STANDARD HUBS
0,50,50,50,50,750,750,750,75
11111
1,51,51,51,51,52222222222
2,52,53333333334444444444
4080160XXS4080160XXS4080160XXS
10 mm4080160XXS
14,2 mm4080160160XXSXXSXXS
12,5 mm14,2 mm17,5 mm
XXS20 mm
4080160XXSXXSXXS
16 mm17,5 mm25 mm
408080120160XXSXXSXXS
7,5 mm20 mm
1GR-A51GR-A51GR-A41GR-A4GR-A71GR-A71GR-A51GR-A41GR-A111GR-A111GR-A71GR-A51GR-A51,5GR141,5GR141,5GR14
1,5GR-A111,5GR-A112GR-A202GR-A202GR-A202GR-A162GR-A202GR-A162GR142GR142GR14
2GR-A112,5-3GR-A202,5-3GR-14
3GR273GR27
3GR-A253GR-A253GR23
3GR-A203GR233GR233GR144GR404GR404GR344GR344GR344GR344GR314GR274GR314GR27
21,321,321,321,326,726,726,726,733,433,433,433,433,448,348,348,348,348,360,360,360,360,360,360,360,360,360,360,373,073,088,988,988,988,988,988,988,988,988,9114,3114,3114,3114,3114,3114,3114,3114,3114,3114,3
15,813,911,86,4
20,918,915,611,026,624,320,715,213,440,938,134,027,919,952,549,242,942,938,138,138,135,331,925,345,033,077,973,766,758,558,558,556,953,938,9102,397,297,292,187,380,180,180,179,374,3
50,850,850,850,850,850,850,850,850,850,850,850,850,879,479,479,479,479,492,192,192,192,192,192,192,192,192,192,1127,0127,0127,0127,0127,0127,0127,0127,0127,0127,0127,0152,4152,4152,4152,4152,4152,4152,4152,4152,4152,4
44,544,544,544,544,544,544,544,544,544,544,544,544,560,360,360,360,360,369,969,969,969,969,969,969,969,969,969,982,682,682,682,682,682,682,682,682,682,682,692,192,192,192,192,192,192,192,192,192,1
44,5044,5044,5044,5044,5044,5044,5044,5044,5044,5044,5044,5044,5054,0054,0054,0054,0054,0050,8050,8050,8050,8050,8050,8050,8050,8050,8044,5063,5054,0063,5063,5063,5063,5063,5063,5063,5063,5054,0054,0054,0073,0073,0073,0073,0073,0073,0073,0073,00
38,138,138,138,138,138,138,138,138,138,138,138,138,160,360,360,360,360,373,073,073,073,073,073,073,073,073,073,0101,6101,6101,6101,6101,6101,6101,6101,6101,6101,6101,6127,0127,0127,0127,0127,0127,0127,0127,0127,0127,0
7,957,957,957,957,957,957,957,957,957,957,957,957,9511,1011,1011,10,12,7012,7011,1011,1011,1011,1011,1011,1011,1011,1011,1012,7012,7011,1012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,7012,70
0,300,300,300,300,200,200,300,300,200,200,300,300,400,700,800,801,101,101,001,101,201,301,201,401,501,601,601,903,504,002,102,302,903,203,403,503,503,604,502,803,203,704,104,404,705,205,405,305,70
0,400,400,400,400,400,400,400,400,400,400,400,400,401,301,301,301,401,401,601,601,601,701,601,701,801,801,801,704,303,804,004,004,104,104,204,304,204,203,904,704,707,107,107,107,107,307,407,307,40
NOM.SIZE
G-LOKSIZE 50C 100C 150C 200C 250C 300C 350C
PRESSURE RATING (BAR)
2
3
4
6
8
10
12
14
16
18
20
24
B14B16B20
C20C23C25C27
D27D31D34D40
XF40XF46XF56
X862X864X867X872
X10H82X10H84X10H87X10H94X10H97
X12M102X12M106X12M112X12M120
A-P106A-P112A-P120A-P130
S112S120S130S134S137S140S152
U152U160U170
3V1603V1703V1803V192
3Y1923Y2003Y2103Y220
935853784
908822730535
823779606456
1240920640
617505416320
47142346
233176
427342264166
595532427280
763689551488443429278
390355316
385337316241
534516453365
887810744
862780693507
782740594432
1200881604
586479395304
447401328221167
405325250158
577505406265
724654523464421407264
371340299
363324300227
525518427342
866790726
841761676495
763722580422
1146826566
572468385296
436391320215163
395317244154
563493396259
707638510452411397257
354323287
345310292220
510503416335
840766704
816738655480
740700562409
1114796521
555453373287
423380311209158
383308237150
546478384251
685619495439398385250
335306273
331293284214
493482403324
797728669
775701622456
703665534389
1035722496
57431355273
401361295198150
364292225142
518454365239
651588470417378366237
311291258
312276269200
478452379307
742677622
721652579424
654618497362
995693465
490401330254
373335274185140
339272209132
482423339222
605547437388352340221
296276244
296261250184
433418347282
734670616
713645573420
647612491358
960639419
485396326251
369332272183138
335269207131
477418336220
599541433383348337218
289268236
289254248179
416402341276
-
C M G N
16 5
Pressure Temperature Rating Stainless Steel
Assembly and Dis-Assembly Procedure
INSPECT COMPONENTS PRIORTO ASSEMBLYHub and sealring seating surfaces must beclean and free from foreign matter. Damage tohub seats is not acceptable, and should be rec-tified before assembly.
LUBRICATEUsually sealrings are coated which acts as lu-brificant during make-upe. If required light oilor MoS2 spray can be used. Take care that nosolid particles are present in the lubricant.
CHECK SEALRING STANDOFFThe sealring should rock slightly against hubface.Stand-off dimensions given below in mm.
ASSEMBLE COMPONENTSInstall sealring into the hubs, and assembleclamps around the hubs. Lubricant applied tothe hub/clamp contact area will aid assembly.The studbolts should be fitted ensuring thatspherically faced nuts locate into sphericalseats of the clamps. Lubrication of nut facesand bolt threads is recommended.
TIGHTEN BOLTS IN UNIFORM MANNERBolting should be tightened to keep spacingbetween clamp halves approximately equal.Clamp segments should be shocked with suita-ble soft faced hammer to aid assembly. Alwaysre-t ighten bolts after shocking to thetorque/preload values given below.
ALIGN HUBSHubs should be aligned so that sealring can beinstalled between hubs. DO NOT attempt tocorrect badly mis-aligned piping by clampingforce alone; piping pulling forces should onlybe released when clamps is fully assembled.
ASSEMBLY
DE-PRESSURISE THE LINEAlways check, never take for granted that theline has been de-pressurised. Proceed withcaution in case seepage has caused pressureto build up again.
SLACKEN NUTS BUT DO NOT REMOVE THENUTS FROM THE BOLTS - THEN SLACKENCLAMP SEGMENTSGradually run the nuts back along the bolts un-til just loose. If clamp segments remain boundonto hubs, then BOTH segments must beslackened by hitting the inner face of the clamplugs with a suitable hammer.
REPEAT SLACKENING PROCEDURERe-loosen nuts and re-slacken BOTH clampsegments until the maximum nut travel shownbelow is reached. This should release seal ringcontact and any residual pressure will then bereleased through, with the joint.
CHECK CLAMPS ARE SLACK AND FREE TOROTATE AND/OR ROCK ABOUT HUBSDo not proceed until discharge ceases andclamps are slack, free to rotate or rock. NOTE- If pressure is still in the line, the sealring mi-ght remain seated, making the joint tight eventhough it is part dis-assembled. Dis-assemblycan be completed when clamps are free to mo-ve.
X = Nut travel at each end of bolt
2X = Total nut travel from assembled position
DIS-ASSEMBLY
SEAL RINGSIZE
CLAMPSIZE
BOLTSIZE
RECOMANDEDBOLT TENSIONRESIDUAL (KN)
MAXIMUMBOLT TENSIONRESIDUAL (KN)
RECOMANDEDBOLT TORQUEnu=0,10 (Nm)
MAXIMUMBOLT TORQUEnu=0,10 (Nm)
A4A5A7
A1114
A16A2023
A2527313440465256626772
0,40,40,450,450,50,50,550,60,60,650,70,750,80,90,90,91,11,11,1
0,200,200,230,230,250,250,280,300,300,330,350,380,400,450,450,450,550,550,55
768284879497
102106112120130137140144152160170180192200210213220
1,21,351,21,21,41,51,71,71,41,81,91,51,922,12,32,52,72,933,13,153,25
0,600,680,600,600,700,750,850,850,700,900,950,750,951,001,051,151,251,351,451,501,551,581,63
STAN DOFFNOMINAL
STAN DOFFFOR RE-USE
11,5234D6XF8X8
10HX10H12MX12MA-P5PSU3V3Y
1/2"5/8"3/4"3/4"7/8"1"
1-1/8"1-1/4"1-1/4"1-3/8"1-5/8"1-3/4"1-3/4"
2"2"
2-1/2"2-1/2"2-1/2"2-1/4"3-1/4"
8,3222434476281103103129187220220295295478478478381833
12,43336496991119152152189275324324435435703703703561
1227
20595779
1632153514864866521089136713672054195140484048404839398963
298783
11624131651771671696116042013201330242873596159615961432812006
XCLAMP SIZE MM MM
2X
STANDARD CLAMP SERIES
112 234568
1012
33345712141618
6668101425283236
BCDX8X10HX12MA--PSU3V3Y
3451216192020212223
68112432384041424446
HEAVY DUTY SERIES
STANDARD SERIESClamp material-Low Alloy Steel
NOM.SIZE
G-LOKSIZE 50C 100C 150C 200C 250C 300C 350C
PRESSURE RATING (BAR)
1
1,5
2
3
4
5
6
8
10
12
1GR41GR51GR71GR11
1,5GR111,5GR14
2GR142GR162GR20
3GR203GR233GR253GR273GR31
4GR254GR274GR314GR344GR40
5GR315GR345GR405GR465GR52
6GR406GR466GR526GR62
8GR628GR728GR768GR82
10H8410H8710H94
12M10212M11212M120
803746564330
700450
620493359
663584433264132
645536461303174
677612517324177
655542401202
526301214144
342330277
366220161
706656496290
616395
546434316
583514381232116
568472406267153
596539455285156
576477352178
463265188126
325315254
353214157
646600453265
563361
499397289
533469349212106
519431371244140
545492416260143
527436322163
423424172116
316294227
330202148
595553418244
519333
459365266
49143332119598
478397342225129
502454383240131
485401297150
390223159106
310274212
318191133
559519392229
487313
432343250
46140630218392
449373321211121
471426360225123
456377279141
366209149100
294259196
305181121
530493372218
462297
409326237
43838528617487
426354305200115
447404341214117
432358264134
34719914195
274250186
282165113
524487368215
457294
405322235
43338128317286
421350301198113
442400337211116
428354262132
34319614094
261242174
257158102
-
C M G N
4 17
Sizing Selections
Pressure Temperature Rating Stainless Steel
HOW TO SELECTTHE G-LOK CONNECTOR
1) Determine the following information needed tocorrectly size the G-LOK connector:
Maximum Service Pressure and Temperature (YourDesign Conditions)
The engineering or industry code your project hasspecified. (ASME VIII, B31.3, etc.)
Pipe size and schedule or the I.D. and O.D. of theweld end.
Your piping material.
2) Refer to the tables in this catalogue:
Locate your pipe size and schedule in the Buttweld hub table on pages 6 to 7, then read acrossto the corresponding hub size (third column). Asan example, the 4 schedule 40 Pipe requires aG-LOK Hub size of 4GR40. Also note that thischart has weights and dimensions for this hub andfor most popular hub sizes.
The G-LOK number for the 4GR40 designates thecorrect clamp, bolting and seal ring sizes for thisconnection. The first number refers to the pipe andclamp size, in our example the pipe size is 4 andthe clamp would be the 4. More information onthe clamp can be located in the Clamp table onpage 11.
The final set of numbers is the G-LOK seal for thisconnection (in our example this would be a 40).The G-LOK seal chart is located on page 10.
3) Finally, refer to the pressure-temperature ratingcharts, on pages 14 to 19, to ensure that theG-LOK connector selected meets the design pressu-re and temperature requirements for the code towhich it is being specified.
The standard line of G-LOK connectors andproducts are available in materials and sizesto fit nearly any requirement. But if your requi-rements, pipe size, material or design condi-tions, are not covered by one of our charts,please contact Galperti Engineering. We havean engineering and design staff ready to helpyou solve your most demanding needs.
HOW TO ORDERTHE G-LOK CONNECTOR
After following the selection procedures the informa-tion necessary for ordering G-LOK connectors isthe quantity, the hub number and material, the sealnumber and seal material, and the clamp numberand clamp material.
A G-LOK assembly consists of the following:
Two G-LOK Hubs
One G-LOK Clamp Set, with four studs and eightnuts (Spherical washer available on request)
One G-LOK Seal Ring
HEAVY DUTY SERIESClamp material-Low Alloy Steel
NOM.SIZE
G-LOKSIZE 50C 100C 150C 200C 250C 300C 350C
PRESSURE RATING (BAR)
2
3
4
6
8
10
12
14
16
18
20
24
B14B16B20
C20C23C25C27
D27D31D34D40
XF40XF46XF56
X862X864X867X872
X10H82X10H84X10H87X10H94X10H97
X12M102X12M106X12M112X12M120
A-P106A-P112A-P120A-P130
S112S120S130S134S137S140S152
U152U160U170
3V1603V1703V1803V192
3Y1923Y2003Y2103Y220
737679630
713651585434
647614496368
992736512
483397330257
368331274187143
332269209134
468411332220
586529424377343332218
262237211
254225204177
464459394316
648597554
628573514382
569541437324
960705483
425349290226
324292241164126
293237184118
412362292193
516465373332302292192
260237211
254225204177
453448394316
593546506
574524470349
520494399296
917661453
388319265207
296267220150115
267216168108
376331267177
472425341303276267175
260237211
254225204177
409402367316
546503467
528483433322
479455368273
891637417
358294244191
273246203138106
24619915599
347305246163
434392315279254246161
251228205
246218196171
374367336306
513472438
496453407302
450428345256
828578397
336276229179
256231191130100
23118714593
326286231153
408368295263239231152
237215193
231204183161
354347312284
487448416
471430386287
427406328243
796554372
319262218170
24321918112395
21917713889
309271219145
387349280249227219144
223204181
218193180151
338329296270
481443411
466425382284
422401324240
768511335
315259215168
24021617912294
21717613688
305268217143
383345277246224217142
218200178
214189169148
331324291265
4 G-LOK
CLAMP SET
SEALRINGSIZE 40
4G-LOK
HUB
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C M G N
18 3
Pressure Temperature Rating Superduplex
Designed To Withstands Severe Conditions
STANDARD SERIESClamp material-Low Alloy Steel
The G-LOK connector has been designed formany different critical service applications. Manyof these involve rapid cyclic operating conditionsover extended periods of time, with various com-binations of both pressure and temperature. Toensure compliance with the applicable design co-des with regard to these severe thermal and pres-sure excursions, G-LOK utilizes state of the artengineering technology.Finite Element Analysis (FEA) allows the detailedexamination of all connector elements under the-se varying conditions.
G-LOK CONNECTORS VS ANSI FLANGE
G-LOK Finite Element Model
The G-LOK clamp connection has a significantlysmaller diameter and a shorter lenght than that of acomparably rated ANSI or API ring joint flange con-nection, reducing weight and space required formake-up.The G-LOK is especially well suited to systems thatrequire close piping and hookup arrangements. Asthere are no bolt holes to align, the G-LOK clampmay be rotated to conveniently locate the bolts foreasy make-up and break-down of the connections.
SIZE
WEIGHTS GIVEN ARE APPROXIMATE
G-LOK CONNECTORS VS FLANGES
23468
101216
9182462100190280560
275074
175300485730
1.370
G-LOK
ASSEMBLY
WEIGHT KG.
ANSI FLANGES1500#
ASSEMBLY
WEIGHT KG.
NOM.SIZE
G-LOKSIZE 20C 50C 100C 150C 200C
PRESSURE RATING (BAR)
1
1,5
2
3
4
5
6
8
10
12
1GR41GR51GR7
1GR11
1,5GR111,5GR14
2GR142GR162GR20
3GR203GR233GR253GR273GR31
4GR254GR274GR314GR344GR40
5GR315GR345GR405GR465GR52
6GR406GR466GR526GR62
8GR628GR728GR768GR82
10H8410H8710H94
12M10212M11212M120
166915511172685
1456934
12891025747
13781214901548275
13411114959630361
13191037840623360
1108822663421
661472415299
534515433
573344251
161214991132662
1407903
1245991722
13321173871529266
12961077927609349
13191037840623356
1108822663407
661472415288
508493398
551335245
155614461092639
1357871
1202956696
12851131840511257
12501039894587336
13121037840622244
1108822663392
661472414278
494460355
516315213
151114041061621
1318846
1167928676
12481099816496249
12141009868570327
12751037840610334
1108822663381
661472403270
485428331
498299208
148913841045611
1299834
1150915666
12291083804489245
1197994856562322
12561037840601329
1108822663375
661472397266
459405306
476283189
(C) G-LOK HUBTYPE 12M102
(12" SCH. 160)G-LOK CLAMP
TYPE X12MG-LOK SEAL RING
TYPE 102ASSEMBLY WEIGHT
KG 345
(A) GC COMPACTFLANGE 12"2500 SCH. 160ASSEMBLY WEIGHTKG. 469
(B) WELDING NECKFLANGE 12" 2500 RTJSCH. 160ANSI B 16.5ASSEMBLY WEIGHT1710 KG
-
C M G N
2 19
G-LOK The Advantages
Pressure Temperature Rating Superduplex
The G-LOK Connector is designed to offer thestrength and sealing integrity of a welded joint andthe versatility of a mechanical joint. It serves the sa-me purpose as a bolted flange assembly, with theadvantages of being more easily installed, lighterand smaller.A self-energized, pressure activated connection, theG-LOK, clamp-type connector consists of four basicelements:
(1) Hub
(2) Clamps
(3) Seal
(4) Bolting
The hubs are usually welded to pipe; the seal is in-stalled and the bolting is tightened on the clamps toform a pipe connector that provides superiorstrength and leak integrity. The G-LOK is commonlyused in service with temperatures of up to 650C.The G-LOK also excels in high pressure applica-tions, with working pressure of 30,000 psi not un-common.The G-LOK clamp has been designed for the opti-mum strenght of a bolted connection. Since the boltsare at right angles to the axis of the pipe, they donot receive direct bending and pressure loads. Thissystem of clamping provides greater strength thanANSI or API flanges at a fraction of the seal sizeand weight as a result of this design. Less boltingtorque is required for proper seating of the seal.The design of the connector provides considerablestored energy in the system when compared withANSI or API flanges. This stored energy works toprovide leak resistance during thermal cycling andmaintains proper bolt loading.When properly installed, the G-LOK will usuallyprovide greater bending and torsional strength thanthe connecting pipe. The full face contact of the con-nector resists bending and ensures rigidity not provi-ded by other clamp-type connectors. The pressureand temperature limitations are determined only bythe materials of construction.
HOW THE G-LOK CONNECTORS SEALS
The seal ring in the G-LOK resembles a T in crosssection. The base of the T is the rib that is held byabutting hub faces as the connection is made up.The top of the T forms the lips that seal against theinner surfaces of the hubs.In the assembly of the connection, the clamps fit over
the two hubs, and as they draw the hubs togetherthe seal ring rib ensures proper seal alignment.As the hubs are drawn together by the clamp as-sembly, the seal ring lips deflect against the innersealing surfaces of the hubs. This deflection elastical-ly loads the lips of the seal ring against the innersealing surface of the hub, forming the self-energi-zed seal. Internal pressure reinforces this seal, so thesealing action of the G-LOK is both self-energizedand pressure energized.
G-LOK clamp connectors are interchangeable withother connectors designed and manufactured accor-ding to the same standard.
G-LOK in FREE position
G-LOK in MADE-UP position
HEAVY DUTY SERIESClamp material-Low Alloy Steel
NOM.SIZE
G-LOKSIZE 20C 50C 100C 150C 150C
PRESSURE RATING (BAR)
2
3
4
6
8
10
12
14
16
18
20
24
B14B16B20
C20C23C25C27
D27D31D34D40
XF40XF46XF56
X862X864X867X872
X10H82X10H84X10H87X10H94X10H97
X12M102X12M106X12M112X12M120
A-P106A-P112A-P120A-P130
S112S120S130S134S137S140S152
U152U160U170
3V1603V1703V1803V192
3Y1923Y2003Y2103Y220
153214111309
148313541216903
13451210950765
15501150800
703616554501
666629569388298
549501434279
624548484414
889785672625592582453
462422374
476401362284
623607525429
148013631265
143313081175872
12991210950739
1500