... 3.scientific design,full sizes 4.Fast delivery Filter for check valve,stainless sleeve filterSpecifications:1.Stainless sleeve:302, ... The production contains brass manifold,ball valve,filter,check valve,radiator valve,brass fitting,overlap-welded and butt-welded PE( ... .More than 10 years' constant pursuit for high quality and service makes good reputation for "LvFeng" production. Mutual benefit,win- ...