... check valve: 1.High pressure resistance 2.ISO,CE approved 3.scientific design,full sizes 4.Fast delivery Filter for check valve,stainless ... sleeve filterSpecifications:1.Stainless sleeve:302,304,etc2.Size:3/ ... accessories.The production contains brass manifold,ball valve,filter,check valve,radiator valve,brass fitting,overlap-welded and butt-welded ...