1/2ctsx3/4fpt q/c elbow. CTS quick connect x FIP 90 elbow (push type) for PEX, copper, CPVC, and potable plumbing pipe. Eliminates the need to cut small pieces of pipe to join fittings. Can be easily disconnected and reused without any tools. Approved for behind the wall and underground installations without the use of access panels (always check local codes). Holds up to 250 PSI at 75 F. IAPMO, NSF 61, CSA/ASTM and UPC Code Approved. 1/2" CTS x 3/4" FPT swivel elbow