inside threaded stainless steel gate valve

inside Screw Gate Valve 1.Thread confrim to ASME B 1.20.1,BS21,DIN2999/259,ISO 228/1 2.Suitable medium: Water,Oil,Gas and some corrosive liquids. 3.Intergral Type 4.Working pressure:2000 WOG Nominal Diameter: -1/2"-4" Nominal Pressure: -class150~class300 Testing Pressure: -Shell:1.5~6(MPa) -Sealing:1.1~4.4(MPa) Working Temperature: - -20℃~300℃ Applicable Medium: -Water,Oil,Gas,Steam,etc. Body Material Could be: -Cast Steel,Stainless Steel,Brass,Bronze Threaded Standard Could