Air Safety Valve Soft Seat (M)NPT Inlet (In.) 1/2 in Preset Setting (PSI) 175 psi 686 cfm Rated CFM @ Set Pressure Max Temp (F) 250 Degrees F Brass Body Material Silicone Seal Stainless Steel Ball Stainless Steel Spring Brass Seat Silicone O-Ring Vibra Seal Thread Coating Standards ASME CRN NATIONAL BOARD Compressed Air Safety Relief Standard / High Flow