Plumbing fittings fit Copper, PEX, CPVC Pipe and connects them in any combination Certified by UPC / IAPMO, to meet Lead Free-Free ANSI/NSF-14/G Compliant. AWWA C800 Compliant. Manufactured in an accrdited facility, meeting ASME B1.20.1 ASSE 1112 PERFORMANCE: 200 PSI and 200 degrees F. Use in potable water and hydronic heating applications. LEAK-FREE: EPDM O-Ring Seals