A thermostatic mixing valve (TMV) is a valve that combines hot water with cold water to ensure a constant, safe, and heat-out shower outlet temperature.
Storage of water at high temperatures eliminates one possible breeding ground for Legionella; the use of a thermostat, not a static mixing valve, provides enhanced heat security, and improves user comfort, as the temperature of the hot water remains constant.
Many TMV use wax thermostats for setting. They also shut down quickly in the event of a failure of hot or cold supply to prevent heat or thermal shock.
Practices are increasing worldwide to regulate storage water temperatures to above 60 ° C (140 ° F), and to drain or distribute water at temperatures of less than 50 ° C (122 ° F). Water above this temperature can cause blisters. Many states, states, or municipalities now require that the temperature of all bath water in newly built and extensively refurbished domestic properties be controlled to a maximum of 48 ° C (118 ° F). Installing the thermostatic mixing valve can ensure that water is delivered at the required temperature, thereby reducing the risk of boiling crashes; it also reduces the consumption of hot water from the supply maintained at higher temperatures.
There are three main categories for water-temperature control devices: Heat Sources, Group Controls, and Point of Use.
- Hot Source
It is used with central heating systems that use water as a medium.
- Temperature valve for use in hot water heat distribution systems
- High flow rate suitable for use in under floor heating (glowing) applications
- Allows water to be stored at higher temperatures
- Group Control
It provides uniform distribution temperature for all hot water outlets in the household.
- Designed for multi-point apps
- High flow rate (from 14 gpm to 51 gpm at 45 psi)
- Temperature stability
- Point-of-Use
It is a Single Outlet Thermostatic Vessel, often called "thermostatic faucet", "thermostat tap" or "thermostat valve".
- Designed for single point applications, such as individual showers, wash basins, bathtub or shower fillers
- High level of protection against boiling and thermal shock
Although there are other temperature regulating valves, thermostatic blending valves are the preferred type in health care facilities, because they limit the maximum outlet temperature, regardless of pressure or flow.
Video Thermostatic mixing valve
See also
- Balanced pressure valve
Maps Thermostatic mixing valve
References
- thermostatic mixer thermostat patent
External links
- Manufacturers Association Thermostatic Mixer Valve
Source of the article : Wikipedia
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