SDV type auto muffler, the stainless steel mesh instead of bronze filter,so it will has better flux and used in food machine. SDV Type Series auto MufflerMaterial:Bronze Item Code:SDV-6,SDV-8,SDV-10,SDV-15,SDV-20,SDV-25Thread Size:1/8",1/4",3/8",1/2",3/4",1" Thread Kind:BSPP,BSPT,NPT Color:Nature Normal Package:Plastic Bag