supply of gate valve / check valve , supply of items as per following specifications , gate valve solid wedge , rising stem , 150 lbs , raised face , flanged end s to ansi b16 . 5 , bolted bonnet , material-body a216 wcb , trim aisi 410 / 1 3%cr ss size-4 , as per api 600 . , check valve swing type , flanged ends flanged to ansi b16 . 5 , #150 , rf , bolted cover construction . valve body made from cast steel , casting conforming to astm a216 gr . wcb and trim parts machined from ss410 quality bar stock , fitted with teflon gasket packing , valve tested as per api 598 size 4 . , check valve swing-type , material-body a216wcb / disc-182f6 , #15 0 lbs , ansi b16 . 5 , flanged-rf , size 6 . , gate valve , 1 . 5 , 800# , socket weld moc - body and bonnet - astm a 182 f 316l , stem - a182 f 316l , disc & body seat ring - stellited , gate valve , 1 , 800# , ends socket weld , bolted bonnet moc- body & bonnet- cf3m , trim , wedge , seat ring , gland bush , gland , trim , wedge , seat ring , gland bush , gland follower ss316l , bonnet bolt a193grb8 , bonnet gasket ss 304+caf . design as per api 602 , testing as per api 598