Gate Valves: Feature Type : Bolted Bonnet, O. S. & Y Type, Rising Stem, Wedge : Solid Taper Wedge, Split Wedge, Flexible Wedge Size Range : 15mm To 400mm & Above On Request Pressure Rating : 150#, 300#, 400#, 600#, 800#, 900#, 1500# End Connection : Flanged Ends, Socket Weld Ends, Screwed Ends & Butt-weld Ends Mfg. Std. : Api 600, Api - 6d. Bs-1414 Testing : Api-6d, Api- 598, Bs-6755-1 Material Of Construction : Cast Carbon Steel (astm A-216 Gr. Wcb, Astm A 217 Gr. Wc6, Wc9), Forged Steel (astm A 105, Astm A 182 Gr F22, F304, F316) Cast Stainless Steel (astm A 351 Gr. Cf8, Cf8m, Cf3, Cf3m), Alloy 20 To Astm A 351 Gr. Cn7m