Air Safety Valve, Soft Seat, (M)NPT Inlet (In.) 1/8 in, Preset Setting (PSI) 300 psi, 262 cfm Rated CFM @ Set Pressure, Max. Temp. (F) 250 Degrees F, Brass Body Material, Silicone Seal, Stainless Steel Spring, Brass Seat, Silicone O-Ring, Vibra Seal Thread Coating, Standards ASME, CRN, NATIONAL BOARD, Compressed Air Safety Relief, Standard / Low Flow