Honeywell AM100-LF Sparco Thermostatic Mix Valve. Highly recommended safety device for domestic water heaters. Engine and boilers heat the water to unsafe temperatures. This mix valve adjusts water temperature to a safe 70F to 145F. 1/2" Female NPT fittings. Anti-Scald valves are an important safety item.
Drinking Water Safe.
Lead-free brass fittings and valves carry the NSF us-pw-G marking for lead-free compliance to meet state lead-free legislation, and exceed the U.S. Safe Drinking Water Act.
Know your NPT (National Pipe Thread) Sizes
Male NPT is denoted commonly as either MPT or MNPT
Female NPT is either FPT of FNPT
Pipe thread sizes do not refer to any physical dimension. Reference measurements to the table below, or try mating with a known pipe size before ordering.
Thread Diameter OD of MPT (ID of FPT will be slightly less than this.)