Construction
Brass forged body and spring chamber; bronze
trim and diaphragms; PTFE seat disc and
diaphragm gasket; stainless steel pressure
spring. All parts are commercially cleaned for
cryogenic service.
Note: Also available in stainless steel and special
construction for hi-purity service.
Contact your sales representative.
Temperature rating: +150°F to -320°F
(339K to 78K)
Maximum initial pressure: 600 psi
(42.18 kg/cm2

FINAL LINE CIRCUIT (HOUSE LINE)

Liquid is forced into the vaporizer through the liquid line by the action of the vapor pressure
in the tank. The liquid in the vaporizer is warmed by ambient air (or sometimes by steam) and
changed into gas, which is then distributed through the final-line regulator. As the gas is at or
near ambient temperature, the diaphragm and seat in the regulator can be furnished in standard
rubber materials.

A-31 PRESSURE REDUCING VALVE FOR FINAL-LINE GAS SERVICE

Construction
Brass forged body, brass piston; NBR seat disc and diaphragm; aluminum spring chamber;
stainless steel spring. All parts are commercially cleaned for oxygen service. Standard valve has
side inlet-side outlet connections. Also available with side gauge connections.
Temperature rating: +150°F to 0°F (339K to 255K)
Maximum initial pressure: 400 psi (28.12 kg/cm2