For O.D. controlled copper CPVC or Pex - Certified to 200 P.S.I. and 200 deg. F. - IGC 188 and ANSI/NSF-61 certified. Meets UPC, IPC, and CUPC requirements for potable and hydronic heating water distribution. Low lead. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces. 1/2" x 1/2" F.