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Thermostat
A thermostat is a device for regulating the temperature of a system so that the system's temperature is maintained near a desired set point temperature.
Thermostatic radiator valve
A thermostatic radiator valve is fitted on radiators and convectors to regulate room temperature. The valve functions automatically and is comprised of two parts: a sensing element and a valve casing.
Thermostatic radiator valve
A thermostatic radiator valve is fitted on radiators and convectors to regulate room temperature. The valve functions automatically and is comprised of two parts: a sensing element and a valve casing.
Thermostatic return temperature limiter
A thermostatic return temperature limiting valve is installed in a system when the return pipe water temperature must not exceed a set temperature.
Tichelmann system
A two-string system, where each radiator on the same floor has the same total distribution pipe length is called a Tichelmann system.
TÜV
TUV is an abbreviation for Technischer Überwachungsverein – a state-registered testing agency independent of manufacturers and operators.
Two-pipe system
There are two basic categories of pipe systems: one-pipe and two-pipe sytems. The type of system installed will have an influence on dimensioning radiators and piping. A general characteristic of a two-pipe system is that the radiators are dimensioned for the same flow temperature and the same temperature difference.
U-value
The U-value describes the heat loss per sq. metre in relation to the temperature difference between the interior and exterior.
Uniform corrosion
Metallic corrosion involves the loss of metal at a spot on an exposed surface – ranging from uniform attacks over the entire surface to severe local attacks.
UV water treatment
UV treatment of water is a common method of combating microorganisms. This procedure treats only bacteria that passes the UV bulb and should be regarded as a gatekeeper. This procedure gives no long term protection.