... CE approved 3.scientific design,full sizes 4.Fast delivery Filter for check valve,stainless sleeve filterSpecifications:1.Stainless sleeve: ... parts and accessories.The production contains brass manifold,ball valve,filter,check valve,radiator valve,brass fitting,overlap-welded and ... and testing machine,such as CNC lathes and full automatic machines,to ensure the quality;on the other hand,we positively ...