The self-threading double helix design irrigation fittings provides effortless insertion into PE pipe. No longer is there a need to hammer or walk them into the pipe. Just twist the fitting clockwise into the pipe and let the double helix pull the pipe on For use with polyethylene pipe160 PSI at 73FDesigned for easy installation without toolsPatented double-helix design makes secure connections very easyBy twisting the fitting clockwise100% corrosion resistantNot compatible with compressed air or gasesCold water use onlyASTM D-2609 ANSI/NSF 14 and 7