Disassemble with the use of the Removal Tool. iSpring LittleWell Push-Fit fittings allow you to join copper, CPVC or PEX pipes in any combination with no glue, welding, clamps or unions. Just insert the pipe and the inside stainless steel teeth bite down and grip tight, while a specially formulated O-ring compresses to create a seal. Disassemble with the use of the removal tool so fittings and valves can be separated and reused.