ChamFlex® Push To Connect (PTC) is the fastest and easiest way to install HVAC equipment. Use on any HVAC installation where there are copper pipe stubs available. Our PTC fittings will eliminate the cost of threaded adapters, the soldering of the threaded adapters to the copper pipe stub, and the time and effort to tighten the threads, while eliminating potential leak paths. Just push the Push to Connect fitting over the copper stub and you're done! Works best when installing Fan Coils, VAV's, Chilled Beams, Radiant Panels, and any equipment with just copper stub connections on the coil. The PTC can deliver 15-30 minutes of labor saving per hose installation.