Watts® P-667 Ice Maker Tee Valve, 1/2"Quick connect tee. For use with copper, CPVC, pex & polybutylene pipe. 1 4" OD end for use with pex, polyethylene or soft copper tubing. Push fittings hold up to 250 PSI. 1 2" copper tube size x 1 4" OD Quick connect tee For use with copper, CPVC, pex & polybutylene pipe 1 4" OD end for use with pex, polyethylene or soft copper tubing Push fittings hold up to 250 PSI 1 piece, no parts to assemble or lose Code approved for behind wall without access &