Page 71 - Medical Gases and Equipment Catalog

Medical Gases and Equipment Catalog

Post Type Pin Indexed Yoke Valves

Post type pin indexed yoke valves for medical gases are designed Typical cylinder yoke
such that pins in the yoke and corresponding mating holes in close it),and never use more than one gasket to provide the
the valve body preclude unintended connections. Post type pin gas-tight seal. Always refer to the manufacturer’s instructions for
indexed valves require a yoke fitting that compresses a single attaching the regulator to the cylinder.
washer against the flat valve face to ensure a gas tight seal. The
yoke is equipped with two pins (except CGA 965) that fit into
corresponding recesses located on the valve face, minimizing
the possibility for error since both parts must match to make a
connection. Never remove pins from yoke fittings.
Praxair supplies a new gasket/washer with each cylinder
equipped with a post-type valve to ensure a gas-tight connection
with the gas regulating device.
The gasket provided is designed for single-use and must be
discarded every time a regulator or cylinder is changed. When
changing the regulator or cylinder, remove the dust cover, “crack”
the cylinder valve (open the cylinder valve momentarily and then

Pin-Index Hole Locations for Post-Type Cylinder Valves
13

R R R2 R1
11 15
16 7 12 14
25 SINGLE PIN 21 24
34 22 23

SINGLE ROW DOUBLE ROW

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Other trademarks used herein are property of their respective owners. The information contained herein is offered for use by technically qualified personnel at their discretion
and risk without warranty of any kind. © Copyright 2014, Praxair Technology, Inc. All rights reserved. Praxair Inc., Danbury, CT 06810-5113