Durachoice 1/4" NPT Stainless Steel (316) Ball Valve - Full Port, 1000WOG with Blue Locking Handles Two-Piece Investment cast body SS316 Working Pressure 1,000 psi (WOG) Minimal pressure drop due to large full size ports Suitable for full range of liquids and gas Temperature range : -60 to 450 degree Fahrenheit Low operation torque 100% individually tested Blowout-proof stem Female NPT Threaded ends to ANSI B1.20.1 Heavy duty locking handles with blue vinyl insulator