What is a TMV3 valve?

Thermostatic mixing valves (TMVs) are used to blend hot and cold water and maintain this at a set constant outlet temperature. This ensures safe and comfortable hand washing, shower and bath temperatures.

What’s the difference between TMV2 and TMV3 valves?

TMV2-approval identifies valves suitable to prevent domestic scalding; while TMV3-approved valves, which offer a higher level of protection, are the only models considered suitable for NHS and healthcare applications. Typically, these valves work on pressures of between 0.1 bar to 5 bar.

What does TMV3 approved mean?

thermostatic valves
TMV3 approval is for thermostatic valves for use in Healthcare and Commercial situations. It certifies that the valves it approves conform to the performance requirements of NHS specification D 08. Types of valves: Type 1 – A mechanical mixing valves with maximum temperature stop (including single lever taps).

What is TMV2 and TMV3?

The TMV2 and TMV3 Schemes are accreditation programmes designed to classify thermostatic mixing valves (TMVs) by their suitability for installation in certain buildings.

What is a mixing valve used for?

A mixing valve reduces the temperature at the faucet, so your family can use the sink, shower or tub with less fear of scalding. Burns can occur quickly, but Honeywell mixing valves help prevent scalding.

What is a Type 1 TMV?

Thermostatic mixing valves – the difference Basic control is offered by a TMV whereas a high level of control is opffered by a TMV3. Type 1. mechanical mixing valves with maximum temperature stop (including single lever taps).

What temperature should a TMV be set at?

As hot and cold water enters the mixing valve it is carefully blended using an internal thermal element to output a mixed water stream at a pre- set temperature that is typically between 39°C and 43°C. This is the recommended temperature range for hot water outlets where a TMV is installed.

Which type of TMVs should be used in healthcare?

Type 3
In healthcare settings, Type 3 is the standard required by the Department of Health’s Health Technical Memorandum 04-01 The control of legionella, hygiene, ‘safe’ hot water, cold water and drinking water systems. 1 Type 3 TMVs should be installed when TMVs are replaced or where there are new installations.

Is a mixing valve necessary?

Conclusion. Thermostatic mixing valves on your water heater are essential to prevent scalding and control water temperature at the delivery point. It allows you to increase the heater temperature, killing off harmful bacteria.

Why do you need a tmv3 mixing valve?

Water is most commonly stored at high temperatures in order to prevent legionella so, the use of a tmv3 valve provides safety against scalding at the outlet point. Water at 60°C can scald so the tmv3 mixing valve mixes hot water and cold water at the point of discharge to cool the water temperature and prevent scalding.

Which is heatguard tmv3-8 2in1 thermostatic mixing valve?

Heatguard TMV3-8 2in1: The Thermostatic Mixing Valve (TMV) must be TMV3 accredited, WRAS approved and comply with BS7942 & HTM041-01 D08. The TMV should supply 37 lpm flow at 2.5bar pressure loss. The interior seals must be Viton material.

What are the different types of thermostatic mixing valves?

BuildCert approves two categories of Thermostatic Mixing Valves; TMV2 and TMV3. The different valve types are shown below. TMV3 approval is for thermostatic valves for use in Healthcare and Commercial situations.

Are there any tmv2 valves in the UK?

With hundreds of thousands of burns and scalds occurring in the UK annually, both TMV2 and TMV3 valves have the potential to prevent many such cases from happening – particularly as a majority are caused by hot water scalding the skin.