Glossary
Thermostatic mixing valve (TMV)
A valve that blends hot and cold water to deliver a safe, scald-limited temperature at a tap or shower, used mainly where vulnerable people could be burned. Because it holds warm, mixed water close to the outlet, a TMV can itself become a Legionella risk and needs regular cleaning, descaling and servicing.
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"Thermostatic mixing valve (TMV), Legionella glossary." Legionella.io. https://legionella.io/glossary/tmv/
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