Thermostatic mixing valve

Blends hot and cold water to control delivered temperature as designed.

Also called: tempering valve

Function

Blends hot and cold water to control delivered temperature as designed.

Also called: tempering valve

Before buying

Confirm diameter, material, standard, compatibility and exact-part instructions before purchase.

Understand, measure and plan: plan a water-heater replacement.

Specialized part

Mix hot and cold water to deliver more controlled temperature to a circuit or point of use according to the system.

Unstable temperature, too-hot/cold water, low flow or slow response can have several causes, not only the valve.
Check hot/cold supply, strainers, check valves, deposits, adjustment and model before replacement.

Scald risk: do not randomly increase settings; follow manufacturer and applicable requirements.
If the valve is part of a regulated/inaccessible system or isolation is unclear, use the appropriate professional.

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