Data Sheet

A31D Valve
D500213X012
Product Bulletin
21.1:A31D
September 2014
2
 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......................