Air Safety Valve, Soft Seat, (M)NPT Inlet (In.) 1/2 in, Preset Setting (PSI) 225 psi, 878 cfm Rated CFM @ Set Pressure, Max. Temp. (F) 250 Degrees F, Brass Body Material, Silicone Seal, 17-7 SS Spring, Standards ASME/CRN, Air This product contains a chemical that is regulated under California Proposition 65. Warning: This product contains a chemical known to the State of California to cause cancer. Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. -