Fitting ( sold as set of two each ) is made to connect to the Valve or By Pass Valve for Clack WS1 Valve and other "brands" that use the Clack type of valve under their private label.
John Guest Quick Connect Assembly connects to 1" Copper Pipe, PEX, or CPVC pipe.
Fitting. PN V3007-17.
Quick, easy and solid connection, simply by pushing your 1" Copper, PEX or CPVC pipe into the locking collar of the connector.