used in petroleum, chemical industry, metallurgy, electric power, construction, municipal, environmental protection, water supply, fire. Nominal pressure rating: ANSI 150 300 Nominal diameter: NPS 2" ~ 8" Working temperature: -28~ 425° c Actuator: Hand wheel Seat type: Metal seat Material: Body ( 1) WCB ( 2) CF8 ( 3) CF8M Seating surface: ( 1) 1Cr13 ( 2) 304 ( 3) 316