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  2. Thermostatic mixing valve - Wikipedia

    en.wikipedia.org/wiki/Thermostatic_mixing_valve

    There are three main categories for water temperature controlling devices: Heat Source, Group Control, and Point-of-Use. Heat Source. These are used with central heating systems that use water as a medium. Tempering valves for use on hot water heat distribution systems; High flow rates suitable for use in under floor (radiant) heating applications

  3. Heat trap - Wikipedia

    en.wikipedia.org/wiki/Heat_trap

    Microcirculation on the left: Heated water is rising into the pipe on top of the hot water tank, cooling off on the sides of the pipe and thence circulating back into the tank. Right: Circulation of hot water is inhibited by the loop in the pipe. Heat traps are valves or loops of pipe on the cold water inlet and hot water outlet of water heaters.

  4. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    The result of automatically mixing hot and cold water via a tempering valve is referred to as "tempered water". [14] A tempering valve mixes enough cold water with the hot water from the heater to keep the outgoing water temperature fixed at a more moderate temperature, often set to 50 °C (122 °F).

  5. Thermostatic radiator valve - Wikipedia

    en.wikipedia.org/wiki/Thermostatic_radiator_valve

    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.

  6. Plumbing fixture - Wikipedia

    en.wikipedia.org/wiki/Plumbing_fixture

    Each fixture usually has a characteristic means of connection. Normal plumbing practice is to install a valve on each water supply line before the fixture, and this is most commonly termed a stop or "service valve". The water supply to some fixtures is cold water only (such as water closets and urinals). Most fixtures also have a hot water supply.

  7. Automatic balancing valve - Wikipedia

    en.wikipedia.org/wiki/Automatic_balancing_valve

    Variable flow systems require new calculations, new terminology and, most importantly, new technology. The aim when sizing control valves is to find the perfect valve solution for the system. [citation needed] Finding that perfect valve involves understanding the hydronics of the project and recognizing the importance of perfect control flow.

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  9. Hot water reset - Wikipedia

    en.wikipedia.org/wiki/Hot_water_reset

    Hot water reset, also called outdoor reset (ODR), is an energy-saving automatic control algorithm for heating boilers that are typically fired with fuel oil or natural gas. A hot water reset control loop measures the outside air temperature ; this information is used to estimate demand or heating load as the outdoor temperature varies.

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