Approvals ASSE 1061, CSA B125.3, NSF/ANSI 372-2010, NSF/ANSI 61It's the easiest way to join copper, CPVC or PEX pipe in any combination with no soldering, clamps, unions or glueJust insert the pipe and the stainless steel teeth bite down and grip tight, while a specially formulated O-ring compresses to create a perfect sealDisassembly is just as fast using the simple disconnect tool so fittings and valve