Sioux Chief fit quick push fitting system shall be used where simple, quick and safe plumbing connections are needed in repair/remodel or new construction applications. For no crimp , glue, and no solder CTS piping connections. Connects CPVC, PEX, and Copper in any iteration. Fittings and valves shall be certified by ASSE 1061/NSF 61 and shall be listed to meet cUPC requirements . Fit quick fittings and valves shall incorporate a release collar , a stainless steel grab ring , a tube alignment bearing , and an EPDM O-ring.