Slip Coupling 1.cUPC,ACS ,NSF,PATENT approved 2,Market: USA & Canada Europen country 3,1/2 ... " 3/4" 1" Certified to cUPC NSF ACS CE PATENT.Connects Copper,PEX and CPVC pipe in any combination.Certified ... Benefits Easy/fast installaton, Large flow 3,Scope of Application Connects Copper,PEX and CPVC pipe in any combination 4 ... Email: carola @ zjlinbocopper.cn Slip Coupling(cUPC,ACS ,NSF PATENT approved)