Push-To-Connect Fittings (Call Us And Check Availability) These Fittings work on CPVC, PB, PEX, or Copper Pipe. 1/2" Quick-Connect Coupling 1/2" Quick-Connect Tee 1/2" X 1/4" OD 1/4 Turn Stop Valve 1/2" X 3/8" OD 1/4 Turn Stop Valve 3/4"X3/4"X1/2" Push-Fit Reducing Tee