For chemical and industrial application. High quality investment casting body and caps. Pressure temperature rating : 1/4" - 3" 1000 PSI (PN63) / 450deg. F 15% reinforced glass fibrous Teflon seats Blow-out proof stem S/S 316, adjustable stem packing. 100% tested air-under water at at 100 PSI (6 Bars) open & close position.