... 2) Fittings with soldering or brazing end conform to ASME B16.22,3) NPT Male Thread, NPSM ... Female Thread,4) Thread conform to ANSI/ASME B1.20.1,5) Certification : CSA(C37700\C46400 ... \C69300\C48600 Forged Brass),6) Conform to NSF61-4( ... :Description:Certification:Factory: Lead Free Brass Pex to Pb Transitions Fittings (Pex * Pex Barb)