Thermostatic Mixing Valve (TMV) & Remedial plumbing

High hot water temperatures (60°C+ to a min 50°C+) are required for the effective control of Legionella and other bacteria as part of an overall water hygiene management programme.

Hot water dispensed at these temperatures will be a Scald Risk, especially were the service users are elderly, infirm, mentally impaired or very young. The fitting of thermostatic mixing valves to taps and other hot water outlets reduces the delivery temperature and therefore also reduces the scald risk to an acceptable level.

Thermostatic mixing valves (TMVs) mix hot and cold water supplies which results in a temperature controlled water flow which can be supplied to basins, baths showers etc. The mixing is done prior to the point of discharge and reduces water temperature to around 43°C, (this can be varied according to the type of fitting supplied)

When installed and maintained correctly, the thermostatic mixing valve will fulfill the care requirements against scalding. TMVs can are currently successfully used by schools and colleges, healthcare and nursing properties, hospitals, sport and leisure centres, housing associations, sheltered accommodation, prisons, and many other commercial and public properties.

As with most issues associated with water safety legislation and guidance, there are certain regulations that must be followed. These cover the type and specification of thermostatic mixing valve or shower valves that need to be fitted in higher risk properties, where and how these are fitted and, most importantly, all published guidelines (ACoP L8, HTM 04-01, DO8, etc.) state that when fitted they must undergo a planned and recorded service programme. The servicing is determined by the manufacturer’s guidelines but the majority state firstly that they should be installed only by suitable qualified plumbers (who have undergone the manufacturer’s specific training) and that annual servicing is required as a minimum. In most cases, if these instructions are not followed then the manufacturer’s warranties actually become void.

For more information on how TMVs work click here

As you would expect the technicians employed by Nant Ltd are competent plumbers and have undergone the appropriate training specifically to:-

  1. Undertake annual servicing of all types and makes of TMV’s and shower valves
  2. Undertake maintenance and repair of all types and makes of TMV’s and shower valves
  3. Replace or fit new TMV’s and shower valves of the appropriate specification required.
  4. Maintain warranties and guarantees, (Conditions apply).

In addition to the above, we also undertake remedial plumbing works, such as the removal of dead ends and dead legs, replacement of domestic cold water storage tanks and refurbishment of assets to Water Regulation standards etc.

All Nant Ltd engineers and technicians conform to the BPEC, WRAS and APHC sanitation and drainage system regulations.