triple offset butterfly valve tx literature.pdf

7/27/2019 TRIPLE OFFSET BUTTERFLY VALVE TX literature.pdf

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Flowserve TX

Triple Offset High Performance Butterfly ValveDesigned for Heavy Duty Industrial Applications


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In many applications, double offset metal-seated

butterfly valves cannot offer bubble tight shut-off. Forthese applications, Flowserve is now introducing tripleoffset metal seated valves. It features a special sealingmechanism, which consists of contacts of an inclinedand conical disc with laminated seat. As a result, thefriction and abrasion between the sealing elements(disc and seat) are minimized. The unique feature ofthis design is that it provides low torque, broad sealingand tight shut-off.

Single offset

The rotation axis of the disc is moved

back from the sealing surfaces of thedisc. The purpose of this offset is tohave a continuous sealing surface onthe disc.

Double offset

The rotation axis of the disc is movedaway from the center-line of the valvebody. The purpose of this offset isto lift the disc quickly off and awayfrom the seat ring in the body while

decreasing the friction during operation

Triple offset

The virtual conic axis, extended fromthe sealing surfaces of the disc isinclined from the rotation axis ofthe disc. The purpose of this offsetis to eliminate friction, galling andwear generated at the sealing surfaceduring operation and provide bubbletight shut-off on high pressure andtemperature.

Body Centerline

Disc Rotation Axis

Double

Disc Sealing Surface

Disc Rotation Axis

Single

DiscC

oneAxisDiscSealingSurface'sCone

DiscRotationAxis

Triple

Triple Offset Metal Seated ValvesAbout Triple Offset Valve Technology


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Triple Offset Design

Eliminates wear associated with sealing surface contact and

maintains sealing integrity and high cycle life

Metal to metal sealing

Robust single-piece shaft

Fire safe per API 607 5TH edition

Provides low operating torque.

Tight shut-off:

Achieved by introducing triple offset sealing technology.

Triple offset design with inclined conical sealing system:

Eliminates rubbing and jamming associated with sealing surface

contact

Laminated metal or solid metal seat.

Features and Benefits


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Sealing system

The sealing surfaces of the Flowserve valve disc have different angles in all points. The Flowserve TX valve has anelliptical sealing system

The sealing surfaces of an elliptical sealing system are completely in contact at the nal position only, and uponopening, all contact points are released immediately from the seat ring.

This mechanism provides awless bubble tight shut-off. Unlike conventional valve designs, the seat ring is xed in the

body with setscrews along with a retaining ring, mating with the thrust collar. Therefore, the seat ring is not directlyinuenced by uid in open positions.

Laminated seat ringThe laminated seat ring is composed of alternating layers ofmetal and graphite.

The layers of graphite compensate for the lack of smooth matingsurfaces. The laminated seat ring of a Flowserve TX valveprovides bubble tight shut-off even in gas applications.

Each individual layer performs an independent sealing and isunaffected by the damages to other layers.

The elements of the laminated metal plate can be made of variousmetals including Inconel, Monel and Hastelloy depending on theapplication.

Additionally, for high temperature and more severe applications,a solid metal seat ring is available and for low temperatureapplications the solid metal seat ring can be replaced with a PTFEor RTFE seat ring.

Principle of Sealing System

TX Triple offset valves operate using a camming action which reduces the possibility of galling or scratching on thesealing surfaces between the sealing elements (disc and seat). The camming action of these valves also reduces thepossibility of jamming between the sealing elements, which can happen with valves that rely on single point sealing.


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Flowserve TX Triple Offset High Performance Butterfly Valves

Materials of Construction

Body and disc:

Carbon Steel per Stainless Steel per Duplex Stainless Steel per

ASTM A216 - WCB ASTM A217 - CA15 ASTM A351/995 - CD4MCuN

ASTM A216 - WCC ASTM A217 - WC6 ASTM A995 Gr. 5A - CE3MN

ASTM A352 - LCB ASTM A351/A744 (304 SS) - CF8 (Super Duplex SS)

ASTM A352 -LCC ASTM A351/A744 (316 SS) - CF8M

ASTM A351/A744 (316L SS) - CF3M

Low Alloy Steel per ASTM A351/A744 (317 SS) - CG8M

ASTM A352 - LC9 ASTM A351/A744 (317L SS) - CG3M

Inconel per Monel per Hastelloy per Alloy 20

ASTM A494 - Inconel K Monel 500 ASTM A494 - Hastelloy C ASTM A351-CN7M

Disc sealing surface:ENP (Electroless Nickel Plating),Stellite (Stellite alloy is a range of cobalt-chromium alloys)

Seat Ring:Graphite laminated with:

304 SS, 304L SS, 316SS, 316L SS, 317 SS,317L SS, Inconel, Duplex, Monel,Hastelloy C, Alloy 20

Solid seats in:304 SS, 304L SS, 316 SS, 316L SS, 317 SS,317L SS, Inconel, Duplex, Monel,Hastelloy C, Alloy 20, PTFE, RTFE

Shaft:Stainless Steel - 17-4PH ASTM A564,Inconel - ASTM B446,Duplex Stainless Steel - ASTM A276 S31803,Monel - ASTM A494 ,316 SS - ASTM A276 ,Hastelloy C 276 - ASTM B574,

Alloy 20 - ASTM B473

Specifications

Sizes:80mm (3 in) to 1200mm (48 in)

Pressure Rating:ANSI Class 150 / 300 / 600 / 900

Body Styles:

Wafer, Lug, Buttweld, Double Flange


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Flowserve TX Automated Valve SystemsFlowserve offers a comprehensive range of Automax, Norbro, Worcester and Limitorque actuators and instrumentation

to allow us to supply complete automated on-off or modulating packages to meet customer requirements.

Instrumentation

From actuators to positioners, limit switches to solenoidvalves, Flowserve is recognized worldwide as a leader inthe development and manufacture of valve automationsystems and equipment. Backed by Flowserves globalresources of R&D, technical support, worldclass manu-facturing and distribution network, we will continue tolead the industry in automation products and systemsincluding:

Digital network communication Superior diagnostics Intelligent valve controllers Comprehensive user-friendly sizing and selection software Dedicated technical and engineering design support

Actuators

For pneumatic and hydraulic applications for theFlowserve TX valve we are pleased to offer the AutomaxRG-Series Scotch Yoke actuators that provide torqueoutputs up to 2.2 million in-lbs which can handle thefull torque requirements of the TX range of valves. TheRG actuators achieve superior performance by using asuperior yoke support system that significantly reducestransverse loads. The RG actuators feature modular con-

struction which allows convenient interchangeability andmaximizes flexibility in the field including Double acting or spring return (FCW or FCCW) modules Pneumatic or hydraulic pressure modules Torque module with symmetrical or canted yokes Override options - direct drive jackscrew, bevel gear

jackscrew, hydraulic override or declutchable sandwichgear override.


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Flowserve TX Cryogenic Butterfly Valves

Flowserve TX cryogenic butterfly valves are engineered and fully

tested for services down to -196 C (-320 F)

Sizes:

80 mm (3 in) - 900 mm (36 in)

Pressure Rating:

ANSI Class 150 / 300 / 600

End Connection:Double flanged

Design and Testing Specifications:ASME B16.34BS 6755BS 6364MSS SP-55MSS SP-25

General Ordering InformationValve

SizeType

EndConnection

PressureRating Body Disc

ShaftMaterial

SeatDisc Sealing

SurfaceActuator

- -Code Code Code Code Code Code Code Code

3 in 0 3 T X O Buttweld B ANSI CL150 1 WCB 8 17-4PH 1 304 S.S. & Graphite A ENP A Enclosed Gear 1

4 in 0 4 T X C Double Flanged F ANSI CL300 3 WCC A Inconel N 304L S.S. & Graphite B Stellite B Bare Stem 9

6 in 0 6 cryogenic Lug L ANSI CL600 6 LCB H Ferralium 255 F 316 S.S. & Graphite C none X

8 in 0 8 T X G Wafer W ANSI CL900 9 LCC C Super Duplex SS2507

Z316L S.S. & Graphite D

10 in 1 0 gate valve face-to-face PN10 2 LC9 E 317 S.S. & Graphite E

12 in 1 2 PN16 5 CA15 F Monel 3 317L S.S. & Graphite F

14 in 1 4 PN20 7 WC6 K 316 S.S. S Inconel & Graphite W

16 in 1 6 PN40 8 CF8 9 Hastelloy C 6 Duplex SS 2205 & Graphite H

18 in 1 8 PN64 A CF3 Q Alloy20 2 Super Duplex SS 2507 & Graphite S

20 in 2 0 PN100 B CF8M 1 Nitronic 50 M Monel & Graphite J

24 in 2 4 CF3M L Hastelloy C & Graphite K

28 in 2 8 CG8M G Alloy20 & Graphite P

30 in 3 0 CG3M J 304 S.S. 9

32 in 3 2 Inconel N 304L S.S. Q

36 in 3 6 Duplex SS(CD4MCuN)

O316 S.S. 1

40 in 4 0 316L S.S. L

42 in 4 2SuperDuplex SS

(CE3MN)

M

317 S.S. R

48 in 4 8 317L S.S. V

Inconel N

Monel 3 Duplex SS 2205 Y

Hastelloy 6 Super Duplex SS 2507 M

Ally20 2 Monel 3

Hastelloy C 6

Example

Alloy20 2

PTFE T

RTFE G

0 8 T X O F 3 - 8 1 1 C - A 9Valve

SizeType

EndConnection

PressureRating Body Disc

ShaftMaterial

SeatDisc Sealing

SurfaceActuator

8 inTX triple offsetbuttery valve

Double Flanged C lass 300 WCB CF8M 17-4PH 316 S.S. & Graphite ENP Bare Stem

For more information about the Flowserve TX Buttery. please contact the factory.

Material

Material


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To find your local Flowserve representative,

visit www.flowserve.com or call USA 1 800 251 6761

FCD FCENBR0014-01 08/12 Printed in USA.Flowserve Corporation has established industry leadership in t he design and manufacture of its products. When properly selected, this Flowserve product is designed toperform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used i nnumerous applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specificdata and warnings for all possible applications. The purchaser/user must therefore assume the ultimate responsibility for the proper sizing and selection, installation,operation, and maintenance of Flowserve products. The purchaser/user should read and understand the Installation Operation Maintenance (IOM) instructions includedwith the product, and train its employees and contractors in the safe use of Flowserve products in connection with the specific application.

While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only and should not beconsidered certified or as a guarantee of satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express orimplied, regarding any matter with respect to this product. Because Flowserve is continually improving and upgrading its product design, the specifications, dimensi-ons and information contained herein are subject to change without notice. Should any question arise concerning these provisions, the purchaser/user should contactFlowserve Corporation at any one of its worldwide operations or offices.

2008 Flowserve Corporation, Irving, Texas, USA. Flowserve is a registered tr ademark of Flowserve Corporation.

Flowserve CorporationFlow Control1978 Foreman DriveCookeville, Tennessee 38501

Phone: +931 432 4021Fax: +931 432 3105www.flowserve.com

Flowserve Ahaus GmbHVon Braun Strae 19aD-48683 AhausGermanyPhone: +49 2561 686-0Fax: +49 2561 686-39

Flowserve Pte. Ltd.12 Tuas Avenue 20Republic of Singapore 638824Phone: +65 6879 8900Fax: +65 6862 4940

Flowserve Australia Pty. Ltd.14 Dalmore DriveScoresby, Victoria3179, AustraliaPhone: +613-97593300

Flowserve Corporation Beijing OfficeRoom 22A1&A2,HanWei PlazaNo.7 GuangHua Road, Chaoyang DistrictBeijing, China 100004Tel: +86-10-59210600, +86-10-59210601Fax: +86-10-65611899

Size

in

Wafer Lugged Buttweld Double Flange

Class Class Class Class150 300 600 900 150 300 600 900 150 300 600 900 150 300 600 900

3

4

6

8

10

12

14

16

18

20

24 28

30

32

36

42

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Flowserve TX Triple Offset High Performance Butterfly Valve Product Portfolio

For size range of valves built to gate valve face-to-face dimensions, please contact factory. For cryogenic valve size range, please contact factory.

triple offset butterfly valve tx literature.pdf

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