... quick-closing valve, marine self-closing valve, marine cock, marine pipes,down storm valve,swing check valveMaterials:Ductile Cast Iron,Cast iron, cast steel, bronze,stainless steel, SS304 ... ,F7311,F7311C,F7372,F7373,F7358,F7359,F7363,F7364,F7369,F7333 Cast Steel F7311,F7311C,F7312,F7312C,F7319,F7471,F7320,F7472,F7313,F7473 ...