Technical Specification : Size : 1/2", 3/4", 1" NPT and Flange. End connection : NPT,BSPT,Socket weld. Working Pressure : 6000 Psi (413 Bar) Temperature Rating : PTFE 450 Deg. F (232 Deg.C) Grafoil 700 Deg. F (371 Deg. C) Material of Construction : SS 316, SS 304, C.S.(seamless pipe) Optional Sour Gas service valves are available confirming to NACE Std. MR - 01 - 75 Stem packing : PTFE, Grafoil. Orifice : Dia. 4.7 All valves are 100% Factory tested prior to shipment. Testing : Pneumatic Seat test is performed at 1/4 of working pressure. Hydrostatic shell test is performed at 1.5 times the working pressure. Lubrication : Dye molly sulphide