DESIGN FEATURES: - Steam rating: 150 psi WSP - WORKING PRESSURE: 1/4" -2": 600 PSI; 2 1/2"-4": 400 PSI - STEM & BALL: 1(4"-2" :Brass; 2 1/2"-4": Stainless Steel - FULL IS0-5211 PAO POR DIRECT MOUNT AUTOMATION - TFE SEATS AND SEALS - VITON BODY 0-RINGS - TRIPLE STEM SEAL DESIGN - BLOW-OUT PROOF STEM - ADJUSTABLE STEM PACKING - TEMPERATURE RATING: - If C(O. F) to 204·c (400. F) - Vacuum Serviceto 29" Hg