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A thermostatic radiator valve on position 2 (15–17 °C) Installed thermostatic radiator valve with the adjustment wheel removed 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.
This simplifies balancing procedures and enables the installation to be more precisely controlled. Pressure independent valves combine the balancing and control functions in one valve and use springs and/or membranes to precisely control the flows in the distribution network. As such they need no measuring or balancing procedure.
In energy efficiency buildings such as Passive House, R-2000 or Net Zero Energy, simple thermostatic radiator valves can be installed along with a single compact circulator and small condensing heater controlled without or with basic hot water reset [70] control. Economical electric resistance based systems also are useful in small zones such ...
The thermostatic valves close when they become hot; in the most common kind, the vapor pressure of a small amount of alcohol in the valve exerts the force to actuate the valve and prevent steam from leaving the radiator. When the valve cools, air enters the system to replace the condensing steam. Some more modern valves can be adjusted to allow ...
Adjusting is the final setting of balancing devices such as dampers and valves, adjusting fan speeds and pump impeller sizes, in addition to automatic control devices such as thermostats and pressure controllers to achieve maximum specified system performance and efficiency during normal operation.
A thermal expansion valve or thermostatic expansion valve (often abbreviated as TEV, TXV, or TX valve) is a component in vapor-compression refrigeration and air conditioning systems that controls the amount of refrigerant released into the evaporator and is intended to regulate the superheat of the refrigerant that flows out of the evaporator ...
Thermostatic radiator valve; Thermowell; Time temperature indicator; W. Wax thermostatic element This page was last edited on 30 November 2020, at 06:57 ...
Thermostatic valve may refer to: Thermostatic radiator valve; Thermostatic mixing valve; Thermal expansion valve This page was last edited on 4 ...
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