What’s a thermostatic valve?

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A thermostatic radiator valve (TRV) regulates the flow of hot water through heating radiators based on the room temperature. TRVs are cost-effective, environmentally friendly, and available in standard or custom-built units for most radiator systems. The valve sensor, filled with a heat-sensitive substance, expands or contracts based on the ambient temperature and opens or closes the valve stem. TRVs save money on heating bills and reduce CO2 emissions and fuel consumption.

A thermostatic radiator valve (TRV) is an automatic regulating valve that controls the flow of hot water through heating radiators according to the temperature of the room in which it is located. The valve typically features an adjustable temperature setting that allows occupants to select a comfortable temperature in their environment and automatically adjusts the internal mechanism, closing or opening it as needed. Radiator systems equipped with TRV not only offer convenient hands-free temperature control, but also make hot water systems more efficient with significant savings on costs and CO2 emissions. TRVs can be used on most radiators, towel warmers or convector heaters and are available in standard or custom built units.

Radiator heating systems work by circulating hot water through a radiator which has a large combined surface area through which the heat dissipates into the air. Maintaining a comfortable temperature in any space requires regulating the flow of hot water through the radiator. One of the cheapest and most efficient methods of achieving this regulation is to install a thermostatic radiator valve. This device is connected in-line with the radiator feed pipe and consists of an adjustable sensor unit and valve section.

The valve sensor consists of a metal bulb filled with a heat sensitive substance such as wax. This substance will contract and expand based on the ambient temperature it is exposed to, and it is this movement that activates the rest of the mechanism. An adjustable temperature dial determines the time it takes for the movement of the sensor bulb to act on the mechanism, thus allowing you to choose a range of ambient temperature settings. As the expanding bulb acts on the mechanism, it opens or closes the valve stem. In this way, the valve supplies hot water to the radiator when the room temperature drops below the selected value and closes it again once the temperature has restored.

TRVs are not only convenient, but also cost-effective and environmentally friendly. Controlling the heating water flow thus reduces the energy consumption of the entire heating system, thus saving money on heating bills. The environmental impact of the system is also favorably influenced with respect to the reduction of CO2 emissions and fuel consumption. There is a wide range of thermostatic radiator valve types available as standard, standard units or, if you meet an out-of-the-ordinary system requirement, as customized variants. A thermostatic radiator valve is suitable for almost all water and steam radiator heating systems as well as towel warmers and convectors.

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