nk, nks, nkl richter ptfe shut-off and control butterfly ... · shut-off and control butterfly...
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NK, NKS, NKL
Richter PTFEShut-off and ControlButterfly Valves
• Body Lining PTFE*• Disc/stem unit PFA* or stainless steel/Hastelloy *(e.g. Teflon®, Dyneon®)
2
NK, NKS, NKL
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Fields of applicationRichter butterfly valves haveproved successful inthousands of installations ina wide variety of processplants.• Shut-off, throttling and
control of corrosive and pure liquids, gases and vapours.
• Also suitable for free-flowing, low-abrasive bulkmaterials in the version with the metallic disc/stem unit.
• FDA-compliant, wetted materials permit use in food processing, pharmaceutical and similar applications.
• The short face-to-face butterfly valves are advantageous in confinedspaces - e.g. under vessels.
• Butterfly valves are economical valves:easy to install and dismantle, low-priced.
Operating range• operating temperature
-60 to + 200°C(-75 to + 400°F)
• operating pressure0.1 mbar vacuum to 10 bar(0.00145 psia to 145 psig)
Product features• Soft-sealing and gas-tight,
both with lined and metallic disc/stem units
• Leak-tight to the atmosphere in line with the requirements of the ”TA-Luft” (German Clean Air Act) at DN 50 -300 (2”- 12”) with optional safety stuffing box
• Leakage rate in the seat toDIN 3230 Part 3, leakage rate 1: gas-tight
• Short face-to-face:ISO 5752 series 20,API 609 Table 1,MSS SP-67 Table 3
• Flanges (with lug-style anddouble-flange bodies) forconnection to ISO 7005-2PN 10, ANSI B16.5 Class 150, JIS R 2210-10K
• Almost equal-percentage characteristics
• Anti-adhesive wetted surfaces thanks to PFA / PTFE
• External corrosion protection: epoxy coating,stainless steel nuts and bolts
• Identification of the valvesto DIN EN 19, ANSI B16.34
• Actuation:• hand lever, lockable• worm gear with
handwheel• pneumatic/electric
actuators• valve with centering
according to ISO 5211
or alternatively• made of metallic
materials• stainless steel 1.4408
(≈316) investment cast or Hastelloy C4 (2.4610)
• polished sealing surfaces,thus very low friction values
• polished disc surfaces onrequest
• other materials(e.g. Alloy) on request
Wide sealing surfaces ofthe body lining for reliablesealing even with matingflanges with large radii, e.g.glass-lined components.
Teflon®, Kalrez®, Viton®: TM of DuPontDyneon®: TM of DyneonRichter: TM of ITT RichterITT Industries: TM of ITT Industries
Thick-walled virgin PTFElining of the valve body• Lining thickness 3 - 3.5 mm• High permeation
resistance• Vacuum-tight• Optionally antistatic lining
for explosion-hazardous applications
Pressure-bearing bodymade of ductile cast ironEN-JS 1049 (formerly:0.7043, GGG-40.3), PN 10• absorbs system and piping
forces• centers the valve in the
pipe
Disc/stem uniteither• lined with virgin PFA
fluoroplasticThe combination of a PFAdisc/stem unit with a PTFEbody provides very low friction and torques during the opening and closing processes, minimum wear and a longservice life
• Optionally antistatic PFA lining
Depending on the bodyversion, these butterflyvalves can be installed• as a wafer-style
butterfly valve (”sandwich-type butterfly valve”) with all three body designs or
• as a flange or dead-endbutterfly valve with lug-style and double-flange body.
Type code, wetted materialsmanual actuation:NK/... Double-flange bodyNKS/... Wafer-style (sandwich) bodyNKL/... Lug-style body
remote actuation:NKP/... Double-flange bodyNKSP/... Wafer-style (sandwich) bodyNKLP/... Lug-style body
.../F Lining PTFE, disc/stem unit PFA
.../F-L Lining PFA/PTFE antistatic
.../...-S Alternative disc/stem unit of stainless steel
.../...-H Alternative disc/stem unit of Hastelloy C4
NK, NKS, NKL
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530
402
550
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Stem sealing• Maintenance-free and
self-adjusting,therefore reliable even with many switching cycles and fluctuating temperatures.
Long valve neckpermits optimum heatinsulation without theinstallation of an elevatedlever. Additional stemextensions on request.
Safetystuffing box(on request)
Monitoringconnection(on request)
Lug-style body NKLDN 50-400 (2-16”)
• Optional safety stuffingboxfor use with environmen-tally hazardous media, life-loaded, independently acting, can be adjusted manually from outside, onrequest with monitoring connection.
Double-flange body NKDN 50-300 (2-12”)
Wafer-style body NKSDN 50-400 (2-16”)
NK, NKS, NKL
4
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804510 503/550
H
DN
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SW
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F
L T
EC
BH
A
L
F G
850
510
857
235
857
502”43
1357266284
1254 x 194 x M16120,54 x 194 x 5/8”
9039
301410153,54,54
803”46
160899367
17,5160
8 x 198 x M16152,54 x 194 x 5/8”128
310301611154,57,55
1004”52
17510010687
24,5180
8 x 198 x M16190,58 x 198 x 5/8”150
313302012166
9,57,5
1506”56
21212813514248
2408 x 238 x M20241,58 x 228 x 3/4”212
31436251820111612
2008”60
23216516519371
2958 x 238 x M20298,58 x 228 x 3/4”265
316362518201523
19,5
25010”6827219519524392350
12 x 2312 x M20
36212 x 2612 x 7/8”
3154
1642302225253529
30012”78297225230292112400
12 x 2312 x M20
43212 x 2612 x 7/8”
3654
20433222253354
47,5
40016”102360282
-389150515
16 x 2816 x M24
54016 x 29,516 x 1”480
4–
504030356997–
35014”78
335258
-343137460
16 x 2316 x M20
47612 x 29,512 x 1”430
4–
503525354768–
502”60
F07
803”60
F07
1004”60
F07
1506”80
F10
2008”80
F10
25010”80
F12
30012”80
F12
35014”100
F14
40016”100
F14
502”1613244167
104120
803”5
224782
126197264282
1004”11275293
155247412456
1506”3784
164276431702
11261254
2008”62
170354532912
137122122503
25010”85285512882
1451225636924083
30012”159421835
13782282363357356512
40016”295780
1550256042406750
1065012100
35014”230610
121020003300527083209450
502”65
300400,7
803”65
300400,7
1004”60
300400,7
1506”70
500483,7
2008”70500483,7
25010”
30012”
35014”
40016”
502”73514560
1008727
18162
102122
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803”73514560
1508727
18162
102122
4
1004”73514560150872718162102122
4
1506”7363458015010727181621251424,5
2008”73634580
15010727
18162
1251424,5
25010”105697080
25012040
20689
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30012”105697080
25012040
20689
1301699,5
35014”12610086
10025014242
22690
20019015
40016”12610086
10025014242
22690
20019015
502”20
100
803”46
180
1004”63
360
1506”
128725
2008”
185775
25010”287
1435
30012”410
1775
35014”550
3000
40016”650
3500
0,32 0,3 0,29 0,26 0,23 0,19 0,16 0,120,14
Connecting dimensions, flow rates, torquesInstallation dimensions (mm) and approx. weights (kg)
DNinch
LH
B NKS/NKLB NK
ET
K [ISO]nxd[ISO]1)
n2)
K [ANSI]nxd[ANSI]1)
n 2)
CF
G*A
Ø SSWM
Weight NKS NKL NK
An
gle
of
op
enin
g
kv-values (m3/h)
Flow rates and z-values
Connecting dimensions (mm) for remotely actuated design
Hand lever dimensions (mm) and approx. weights (kg)
DNinch
gConn.dim.*
DNinch
alh
Weight
Worm gear dimensions (mm) and approx. weights (kg)DNinch
bcegkmprstu
Weight
Torques (Nm)DNinchMd
Mdadm
Mdadm. = max. admissible torque (Nm) with the disc/stem unit blocked
Test medium fortorques:Water 20°C (68 °F).The torques may behigher depending onthe medium, e.g. drygases or viscous orcrystallising liquids.
Connection worm gear with handwheel in standard versionand in the version ”with safety stuffing box“.
As the distance between the centre of gravity and the butterfly valveincreases, the actuator exerts an increasing bending moment on thestem. Admissible actuator weights on request.
Wafer-style body (series NKS/NKSP): DIN 50-400 (2-16”)Lug-style body (series NKL/NKLP): DIN 50-400 (2-16”)Double-flange body (series NK/NKP): DIN 50-300 (2-12”)
Connection toDIN / ISO 5211
*to DIN / ISO 5211
Conversion to Cv = kv x 1,165 (US gpm) = kv x 0,971 (lmp gpm)
Flange connecting dimensions to ISO 7005-2 PN10 and ANSI B 16.5 Cl. 1501) Flange through holes 2) Tapped holes metric or UNC* Dimension G only applies to double-flange bodiesWeight with bare shaft end (without lever, bracket, etc.)
z-values at 75 % flow
Worm gear
20°30°40°50°60°70°80°90°
DNinch
NK, NKS, NKL
5
517
300
412521
409
519
518
400
405
413
300
229
221
120
235
300517
510
850
804
558 ISO 52115
10,5
0,1
10
50100
5001000
0
2
4
6
8
10
-60 0 100 20016012020
0,0725
0,01450,00725
0,00145
0,145
0,7251,45
7,2514,5
0
30
60
85
115
145-75 30 210 40032025070
Pressure / temperature range
Temperature in °C
Vac
uu
m in
mb
arG
aug
e p
ress
ure
in b
ar
Components and materials
Proximityswitch
Body lining
Flexibleinlay
Shell
Disc
Vac
uu
m in
psi
aG
aug
e p
ress
ure
in p
sig
Temperature in °F
Pulse generator under thedisc lining
Proximity switchThe proximity switch reliably indicates the closed position of thevalve disc. Available for PFA-lined disc.
Designation Standard design Special designShell Ductile cast iron EN-JS 1049 (0.7043) / ASTM A395Disc/stem unit, one-piece PFA/stainless steel, stainless steel 1.4408 (≈316 L) PFA antistatic, Hastelloy C4 (2.4610)Guide pin (DN≤150/6”) Stainless steelHand lever Ductile cast iron EN-JS 1049 (0.7043) / ASTM A395Plain bearing PTFE-lined (triple bearing)O-ring Viton® (top and bottom) or equivalent Kalrez® or equivalentThrust rings Stainless steel (top and bottom)Body lining PTFE PTFE antistaticSealing foils – PTFE, standard in conn. with items 503/550Packing gland follower (see p. 3) – Stainless steelBracket Connection to DIN ISO 5211 and NAMUR Special design on requestScraper ring Fluorocaoutchouc - not given with safety stuffing box installedCup spring assembly Stainless steel (top and bottom)Throttling plate Stainless steelFlexible inlay Silicone Viton® or equivalentSafety stuffing box, base ring (see p. 3) – PTFE, stainless steelMonitoring connection (see p. 3) – Only in conjunction with items 503/505Grounding cable/strip Stainless steel, with double-flange body integrated into the flangesCoupling Stainless steel, connection to DIN 3337 Special design on requestActuator Pneumatic quarter-turn actuators Pneumatic or electric actuators
e.g. Richter RA, bar, Norbro, El-o-matic, AMG, Hytork etc. of various makesWorm gear with handwheel Body grey cast iron with epoxy coating Body ductile cast iron, aluminium.(not illustrated, see p. 4) shaft with O-ring,
stainless steel shaft and boltsDisplay of the closed position (see above) – Proximity switch, pulse generatorStem extension, not illustrated – Design on requestNuts, bolts and washers Stainless steel
Item120221229235300400405409413503510517518519521550
558804850
857
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ITT Richter Chemie-Technik GmbHOtto-Schott-Straße 2D-47906 KempenTel. +49 (0) 21 52 / 146 - 0Fax +49 (0) 21 52 / 146 - 190www.itt-richter.de
NK, NKS, NKL
Presented by:
Publ
icat
ion
No
139e
1.0
2
Subject to change withoutnotice.Printed in Germany.©ITT Richter Chemie-TechnikGmbH.
Installation examples
Glass
On request collar bushinginstead of tapped hole
Metal
Depending on the bodyversion, the butterfly valvescan be installed• as a wafer-style
butterfly valve (”sandwich-type butterfly valve“) with all three body designs or
• as a flange-mounted or dead-end butterfly valve with lug-style and double-flange body.
See page 5 for flange holesand threads for connectionto ISO, ANSI and JIS.
Wafer-style bodyThe flangeless butterfly valveis fixed between 2 flanges bypipe bolts.
Lug-style bodyThe lugs are providedalternatively with• Through holes:
The butterfly valve is centered in the holes by the pipe bolts and securedby the pipe flanges.
Double-flange bodyFlanges alternatively with• Through holes:
The valve is centered as a wafer-style butterfly valve by means of the pipe boltsin the holes. Alternatively, it can be installed as a dead-end valve with a nutinserted between the valveflanges.
• Tapped holes:The butterfly valve is installed as a dead-end valve or flange-mounted valve. The pipe side to be dismantled can be removed without any axial displacement, the butterfly valve acts as a dead-end valve.
• Tapped bores:The valve is installed as a dead-end or flange-mounted butterfly valve. The pipe side to be dismantled can be removed without any axialdisplacement.
• Glass connection:On the glass side, tapped holes or through holes with collar bushing.