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www.Fisher.com
Fisher
r
POSI-SEAL
t
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
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Indice de contenidos

Pagina 1 - Performance Butterfly Valve

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

Pagina 2

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

Pagina 3

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

Pagina 4

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

Pagina 5

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

Pagina 6

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

Pagina 7

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

Pagina 8

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

Pagina 9

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

Pagina 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

Pagina 11

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

Pagina 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

Pagina 13

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

Pagina 14

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

Pagina 15

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

Pagina 16

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

Pagina 17

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

Pagina 18

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

Pagina 19

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

Pagina 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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