Pressure Range: 75, 125, 145, 150, 165, 200 and 225 PSISet Pressure Tolerances: 3% of Set PressureTemperature Range: -65F to 400FConstruction: Seat Cap and Piston C360 Brass (ASTM B-16), 17-7 Stainless Steel Spring and Silicone Seal.Bubble Tight to Within 5 psig for Set Pressure 50 psig or Less, Bubble Tight to Within 10% for Set Pressures Greater than 50 psig. 100% Testing or 2.5 AQL Sample Testing, Conforming to AP1 527.Stamped with the UV and NB Symbols.Everseal 483 Sealant Standard.