A thermostatic mixing valve (TMV) is a device designed to regulate the water temperature by blending hot and cold water to deliver a controlled and safe mixed water outlet temperature. Its primary function is to prevent scalding, which occurs when the water is too hot and can cause burns or injuries, especially for vulnerable individuals like children, elderly, or people with reduced sensitivity to heat.
Here's how a thermostatic mixing valve prevents scalding:
Temperature Control: The TMV is equipped with a sensitive thermal element, often a wax or liquid-filled capsule, that responds to changes in water temperature. When the incoming hot and cold water supply temperatures fluctuate, the thermal element expands or contracts, adjusting the proportion of hot and cold water to maintain a stable and safe outlet temperature.
Pre-set Temperature Limit: Most TMVs come with a pre-set temperature limit, often at 38-41°C, which is a safe and comfortable temperature for most purposes. This pre-set limit acts as a safety measure, ensuring that the water cannot reach scalding temperatures even if the hot water supply suddenly surges.
Fail-Safe Mechanism: In the event of a failure or malfunction in the thermostatic element, some TMVs have a fail-safe mechanism that automatically shuts off the hot water supply. This prevents the valve from delivering scalding hot water and provides an added layer of protection.
Anti-Scald Cartridge: Some modern TMVs incorporate an anti-scald cartridge, a mechanical safety feature that can shut off the hot water supply if the cold water supply fails, further preventing scalding incidents.
Accreditation and Standards: Thermostatic mixing valves used in public and commercial buildings often need to comply with specific safety standards and regulations to ensure their effectiveness in preventing scalding.
By maintaining a constant and safe water temperature at the outlet, thermostatic mixing valves effectively prevent scalding incidents, providing peace of mind for users and ensuring water safety in various settings, such as residential bathrooms, nursing homes, hospitals, schools, and public facilities.
Tomlinson Plumbing can assist with installation, service, repair and testing of thermostatic mixing vales in Geelong, Torquay, Ocean Grove & surrounding areas.
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