A thermostatic radiator valve (TRV) is a self-regulating valve fitted to hot water heating system radiator, to control the temperature of a room by changing the flow of hot water to the radiator. The classic TRV contains a plug, typically made of wax (forming a wax motor), which expands or contracts with the surrounding temperature. This plug is c...
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http://en.wikipedia.org/wiki/Thermostatic_radiator_valve
A control valve fitted to individual radiators which can control the temperature of that radiator without affecting any other radiators, enabling different temperatures to be achieved within different rooms or areas within the home.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
No exact match found.
