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Fisher

POSI-SEAL

A31A Cryogenic High

Performance Butterfly Valve

Description

The Fisher A31A Cryogenic High Performance

Butterfly Valve (HPBV) is designed for extreme

temperature cryogenic services and features a valve

body extension which positions the packing system

and the actuator away from the extreme

temperatures. The NPS 3 through 12 valves feature

a unique one-piece investment cast extension

housing (see figures 1 and 2). The NPS 14 through

24 valves employ a two-piece fabricated extension

housing. The valve also features a metal NOVEX

seal as standard providing tight shutoff, low

operating torques and the rugged durability needed

for cryogenic service.

The A31A Cryogenic HPBV has been developed as

a valve/actuator package with a Double D drive shaft

(standard for NPS 3 through 12) to allow easy, direct

mounting to the Fisher 1035 Rack and Pinion

actuator, eliminating the need for external coupling

systems. Also available are keyed shaft (standard

for NPS 14 through 24) and splined drive shafts to

allow easy mounting to other Fisher actuators.

The A31A Cryogenic HPBV is available in either

flangeless (wafer) or single flange styles, and

S31600 (316 SST) is the standard valve body and

disc material. This valve is offered in full rated

CL150 and CL300 pressure classes.

Contents

Features 3..................................

Specifications 2.............................

Installation 3................................

Coefficients 16..............................

Tables

Approximate Weights 3..................

Material Temperature Ratings 6..........

Dimensions 7..........................

W7451

Figure 1. Fisher POSI-SEAL A31A Cryogenic Valve with 1035 Actuator

Product Bulletin

21.1:Cryogenic-Rotary

D500230X012

October 2010

A31A Cryogenic Valve

1 2 3 4 5 6 ... 19 20

Inhaltsverzeichnis

Seite 1 - Performance Butterfly Valve

www.Fisher.comFisherr POSI-SEALt A31A Cryogenic HighPerformance Butterfly ValveDescriptionThe Fisher A31A Cryogenic High PerformanceButterfly Valve (H

Seite 2

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 10Table 6. Dimensions, Single Flange Style Valves, CL300, NPS 3 through 6VALVESI

Seite 3

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 11Table 7. Dimensions, Wafer Style Valve, CL150, NPS 10 through 24VALVESIZE,NPSA

Seite 4

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 12Table 8. Dimensions, Single Flange Style Valve, CL150, NPS 10 through 24VALVES

Seite 5

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 13Table 9. Dimensions, Wafer Style Valve, CL300, NPS 8 through 24VALVESIZE,NPSA(

Seite 6

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 14Table 10. Dimensions, Single Flange Style Valve, CL300, NPS 8 through 24VALVES

Seite 7

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 15M MINIMUM I.D.REQUIREDFOR DISC SWINGCLEARANCEDISCSHOWN INFULL OPENPOSITIONVALV

Seite 8

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 16CoefficientsTable 11. Fisher A31A Cryogenic-Valve CL150, Reverse Flow, NPS 3 t

Seite 9

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 17Table 12. Fisher A31A Cryogenic-Valve CL150, Reverse Flow, NPS 20 and 24Coeffi

Seite 10 - A31A Cryogenic Valve

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 18Table 13. Fisher A31A Cryogenic-Valve CL300, Reverse Flow, NPS 3 through 18Coe

Seite 11

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 19Table 14. Fisher A31A Cryogenic-Valve CL300, Reverse Flow, NPS 20 and 24Coeffi

Seite 12

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 2SpecificationsValve Body Sizes and RatingsNPS J 3, J 4, J 6, J 8, J 10, and J 1

Seite 13

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 20NoteNeither Emerson, Emerson ProcessManagement, nor any of their affiliatedent

Seite 14

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 3Table 1. Approximate WeightsVALVESIZE,NPSWAFERCL150SINGLEFLANGECL150WAFERCL300S

Seite 15

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 4CTFE / ALUM SEAL16B5083BODYGRAPHITEGASKETRETAININGRINGSEALRINGVALVE DISCHIGH PR

Seite 16

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 5CL150, CTFE SEAL CL300, CTFE SEALC0759-1CTFEA4132-1 A3715-2CTFEFigure 4. Maximu

Seite 17

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 6Table 2. Material Temperature RatingsCOMPONENT AND MATERIAL OF CONSTRUCTION TEM

Seite 18

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 7Table 3. Dimensions, Wafer Style Valves, CL150, NPS 3 through 8VALVESIZE,NPSA D

Seite 19

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 8Table 4. Dimensions, Single Flange Style Valves, CL150, NPS 3 through 8VALVESIZ

Seite 20

A31A Cryogenic ValveProduct Bulletin21.1:Cryogenic-RotaryOctober 2010 9Table 5. Dimensions, Wafer Style valves, CL300, NPS 3 through 6VALVESIZE,NPSA D

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