Brass Plumbing Valve Brass Water Genius Valve; Nickel Plated Hydraulic Valve Pneumactic Valve; T handles; 1/2\\\" 3/4\\\" 1\\\"; 1). Valve is used for preventing the back-going of medium in pipelines and equipments, and the pressure of medium will bring the result of opening and closing utomatically. When the medium is back-going, valve disc will automaticaly closed to avoid accidents. 2). Working Temp: 100℃; Working Pressure: PN10 or PN16; Suitable Media: Water,Steam,Oil ect. Bolted cover,Two-piece or three-piece Body,ficde Ball Full or Reduced bore, Blowout Proof Stem Fire safe and Anti static; Dual seat with injection and darin& outlet