Sweat Adapter, Lead-Free Brass, 3/4 Barb Insert x 3/4-In. FP, 10-Pk.10 pack, 3 4" lead free brass barb insert x 3 4" female pipe sweat adapter, for connecting 3 4" cross link polyethylene pex tubing to 3 4" copper pipe end or fitting, secure barb end of fitting to pex pipe with tv #608 826 cinch clamps & tv #608 743 cinch tool, or copper crimp rings & crimp tool, immediately testable to well over 100 psi, meets the new nsf ansi standard 14 2009 & astm f 1807 9si standard for products intended for the transport of