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A31D Valve

D500213X012

Product Bulletin

21.1:A31D

September 2014

 Excellent Emissions Capabilities-- The optional

ENVIRO-SEAL™ packing system is designed with

improved sealing, guiding, and loading force

transmission. The ENVIRO-SEAL packing system can

control emissions to below the EPA (Environmental

Protection Agency) limit of 100 ppm (parts per

million) for valves.

 Shaft Versatility-- This valve will meet your actuator

needs with a choice of splined or keyed shaft

connections.

 Sour Service Capability-- Trim and bolting materials

are available for applications involving sour liquids

and gases. T hese constructions c omply with NACE

MR0175-2002, MR0103, and MR0175/ISO 15156.

 Reliable Flange Gasketing Surface-- Seal retainer

screws are located so there is no interference with

the sealing function of either flat sheet or spiral

woundlineflangegaskets.

 Easy Installation-- The valve body self-centers on the

line flange bolts as a fast, accurate means of

centering the valve in the pipeline.

Table of Contents

Features 1.....................................

Specifications 3................................

Installation 4..................................

Standard Seal Configurations 4...................

Tables

Materials of Construction and Temperature Ranges 6

Valve Body Material Pressure/Temperature

Ratings 8...................................

Dimensions and Weights 10......................

1 2 3 4 5 6 7 ... 11 12

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Emerson A31D Datenblatt Seite 2