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The NG-900 series relief valves are specifically designed for vapor line safety relief applications and cryogenic liquid containers. These valves open and close at preset pressures to ensure reliable performance at cryogenic temperatures. Specifically designed to avoid over pressurization in LNG fuel tank application and LNG installation.

Height [Closed] (in.) 4.1
Height [Closed] (mm) 104.1
Inlet Connection (in.) 3/4"
Inlet Connection (mm) 19
Maximum Allowable Working Pressure (BARG) 41.4
Maximum Allowable Working Pressure (PSIG) 600
Maximum Temperature Rating (°C) 74
Maximum Temperature Rating (°F) 196
Minimum Temperature Rating (°C) -196
Minimum Temperature Rating (°F) -320
Nominal Size (in.) 1"
Orifice Size (in.2) 0.281
Orifice Size (mm2) 7.134
Outlet Connection (in.) 3/8"
Outlet Connection (mm) 9.5
Pressure Setting (BARG) 15.9
Pressure Setting (PSIG) 230
ASME Certification? Yes
Connection Type MNPT x FNPT
Manual Override? Yes
Material Details Body: Stainless Steel ASTM A351 CF8; Bonnet and Tube: Stainless Steel ASTM A351 CFBIASTM A479 type 304| Stem: Stainless Steel ASTM A582 S30300|Spring: Stainless Steel ASTMA313 S30200| Packing: Live-loaded PTFE Packing| Gasket: PTFE 25% Glass Fill| Seat Disc.: PCTFE ASTM D1430|Seat Retainer : Brass ASTM B16|Bonnet Screws: ASTM B16 F837|Handwheel: Painted Aluminum| Body:Stainless Steel ASTM A351 CF8
Product Type Brass Angled Cryogenic Relief Valves
Product Warranty RegO 10 Year
Seat Material Type Soft
Units Imperial-Metric