Relief Valves for Gas & Cryogenic Systems 9400 Series Brass or Stainless Steel, Non-ASME

 

Set Pressure

Specify set pressure within range specified for style and size. The B-9425 & B-9426N are available in select settings only. Special order.

Pipe Away Option

P Pipeaway included and attached, No drain hole in relief valve.
For example PRV9432TP350P
Leave blank for relief valve without pipe-away attached.
For example PRV9432TP350.

For easy identification, the following standard settings have color coded labels for all PRV and SS Style sizes and settings marked in PSIG and bar:

Color Identification

22 psig…………………….yellow
35 psig…………………….purple
50 psig………………………white
100 psig………………………gray
150 psig……………………….red
230 psig………………………blue
350 psig…………………..orange
450 psig………………………pink
500 psig……………….light blu

9400 relief valves are specifically designed for thermal line safety relief applications and cryogenic liquid containers.

Features

    • All valves are cleaned and packaged for oxygen service per CGA G-4.1.
    • Bubble tight at 95% of set pressure.
    • Easy to read color coded psig / bar labels.
    • Tamper resistant
    • Adapters provide standard pipe thread connections for venting gas to the outdoors.
    • Repeatable performance.
    • 100% factory tested.
    • Temperatures Range -320° to +165° F. (-196ºC to +74ºC)
    • Rated for gas service only.

Materials SS Style

Body……………………………..Stainless Steel
Spring……………………………Stainless Steel
Seat Retainer…………………..Stainless Steel
Pipe-Away Adapter……………Stainless Steel

Materials PRV and B Style

Body………………………………………….Brass
Spring…………………………….Stainless Steel
Seat Retainer……………………………….Brass
Pipe-Away Adapter………………………..Brass

 Flow Performance

    • PRV and SS style flow at 0.783 SCFM Air/PSIA at 110% of set pressure.
    • B-9425N flow of 6.7 SCFM Air/PSIA at 120% of set pressure.
    • B-9426N flow of 11.0 SCFM Air/PSIA at 120% of set pressure

Seat Material Option

F for Fluorosilicone for PRV and SS styles for 15-139psi.
T for PTFE for PRV and SS styles for 140-600psi
N for B-9425 and B-9426, Fluorosilicone seat, all set pressures.

Drain Hole Option

Relief valves without pipeaway typically provided with drain holes, leave blank. P – for relief valves without drain hole, for example PRV9432TP350

WARNING: Inspection and maintenance of pressure relief valves is very important. Failure to properly inspect and maintain pressure relief valves could result in personal injuries or property damage. The useful safe service life of a pressure relief valve may be significantly affected by the service environment.