What Does TMV Stand For in Plumbing?
If you have ever wondered, what does TMV stand for in plumbing? Thermostatic mixing valves control the temperature of water to prevent scalding. They are an essential plumbing accessory in large buildings. This type of valve is necessary for water supply protection, as well as reducing the chance of water-borne disease spreading. A thermostatic mixing valve is a good investment in large buildings. The useful lifetime of a TMV varies, but generally, they are dependable. The length of their lifespan depends on the type of device, installation conditions, quality of maintenance, and actual use. Some models are temperature-controlled, allowing them to be set between 20 and 46 degrees Celsius. As such, they respond quickly to changes in temperature. TMV schemes ensure that certified products provide water within known anti-scalding temperature ranges. The TMV3 scheme targets thermostatic mixing valves for use in commercial and healthcare buildings. These valves meet the requirements of NHS Model Engineering specification D 08, and therefore can be used in these institutions. The TMV3 scheme references BS 7942:2011 Thermostatic Valves for Care Establishments. Whether or not a TMV is approved depends on your building’s requirements and safety standards. A TMV may be malfunctioning when the temperature of water changes. A malfunctioning thermostatic temperature control valve can cause a decrease in the water temperature, or it could be the result of a problem with the O-ring or valve itself. The temperature of water can also vary in response to a change in water pressure and flow. The first symptom of a TMV problem is reduced water flow or a decrease in pressure. TMV3 valves must undergo periodic in-service testing. If they fail the test, they must be serviced. The testing regime is outlined in the NHS Model Engineering Specification D 08. The first test must be conducted six to eight weeks after commissioning. The second test should occur 12 to 15 weeks after commissioning. While the frequency of the tests is not set in stone, it is important to test the valve when there is no noticeable change in temperature in the mixed water. When it comes to temperature, a TMV2 is a residential TMV, whereas a TMV3 is for commercial use. The TMV2 is meant for domestic use, and it works with water pressure between one and five bars. In a hospital, TMV3 is a medical TMV that meets two British Standards and is designed to handle water pressures between 0.2 and ten bars. Click here to learn more about boiler service in derby.