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Fisher A31D Double-Flange Butterfly Valve

The Fisher A31D is a double-flange, high performance Butterfly valve featuring either a splined drive shaft or a keyed drive shaft. The A31D is used in throttling or on/off service and is available in NPS 3 through 12, CL150 and CL300.

Details

FEATURES

1.The pressure-assisted seal design provides tight shutoff and permits the use of smaller actuators in applications requiring full ASME B16.34 shutoff capabilities.

2.Shaft-blowout protection is designed into the A31D valve.

3.The optional ENVIRO-SEAL™ packing system is designed with improved sealing, guiding, and loading force transmission.

4.This valve will meet your actuator needs with a choice of splined or keyed shaft connections.

5.Trim and bolting materials are available for applications involving sour liquids and gases.


SPECIFICATIONS

Certifications

PED, CRN, Fugitive Emission, NACE, ATEX, CUTR, Fire Safe

Critical Service

General Service

Flow Characteristics

Linear

Material

Carbon Steel, Stainless, Alloy

Operating Temperature

Standard Temperature, High Temperature

Pressure Class

ASME

Process Connection Type

Double Flanged

Shutoff Class

Class VI (FCI 70-2), MSS SP-61

Valve Size

NPS 3, NPS 4, NPS 6, NPS 8, NPS 10, NPS 12

Valve Size Standard

NPS


Pictures show

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Application area

能源

化工

矿业

医药

水处理