The Tectite by Apollo 3/4 in. Brass Push-To-Connect Stop Valve with Drain is the fastest, cleanest and simplest way to install or replace a valve on copper, CPVC, PE-RT and PEX piping systems without the use of tools, solder, open flame or glue. It allows for simple control of water flow in hydronic and potable water systems and the side vent allows for the expulsion of air or water for testing, repair or weatherization situations. Simply insert the pipe to allow the high-strength stainless steel teeth to grip the pipe securely against the specially designed O-ring. Fitting removal and reuse is just as simple using a simple demount clip (sold separately). After assembly, valves may be rotated for simpler installation in tight spaces.