Flange connecting end¡êoasme b16.5/asme b16.47 Butt welding connecting end¡êoasme b16.25/ asme b31.8 Wall thickness¡êoasme b16.34 Fireproof test¡êoapi 607/api 6fa Inspection and test¡êoapi 6d Pressure and temperature rating¡êoasme b16.34 Product scope¡êonps 4171;nps 60, cl150171;cl1500 Main body material: a105, lf2, f304, f316, f304l, f316l, f51 etc. Valve seat material: ptfe, rptfe, nylon, devlon, derlin, peek, ppl, hnbr, fkm or metal hard seal etc. Drive device: handle, worm wheel, electric, pneumatic, pneumatic-hydraulic, electro-hydraulic, etc.
