CTS quick connect Female adapter (push type) for PEX, copper, CPVC, and potable plumbing pipe. Straight fittings to transition Female iron pipe thread or toilet ballcock thread to quick connect system. 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 P.S.I. at 75 deg. F. IAPMO, NSF 61, CSA/ASTM, and UPC Code Approved.