Mfg Standards/Approvals: Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California, ANSI B1.20.1, ASSE 1015, ASTM B 584, AWWA C510, CSA B64.5, cUL Listed, CUPC Listed, FDA Approved, IAPMO Listed, NSF/ANSI 61, UL Listed