Moen 104465 Adjustable Temperature Thermostatic Mixing Valve Thermostatic mixing valve, with adjustable temperature control cartridge 1/2" CC connections Adjustable from 95F (35C) to 120F (49C), with a  3.5F ( 2C) temperature accuracy Flow rate at 45psi=11gpm, maximum flow rate=12.5 gpm Paraffin based thermostatic engine