Mixes Hot and Cold Water to Pre-Set Output Temperature;Heavy Duty Forged Brass Construction;Integral Check Valve on Inlets;Temperature Locking Handle;Compatible With G1 Fittings;Replacement Checks Also Available;Models available to satisfy all state and federal low-lead laws;Available in MIP, SWT, PRS, PEX, PSH, FIP;CSA B125.3;Certified to NSF/ANSI/CAN 61 & 372;ASSE 1017, 1070, 1061