National Health Service Model Engineering Specification – Thermostatic Mixing Valves – Heath Premises – DO8 and BS 7942: 2000 Thermostatic Mixing Valve for use in care establishments (TMV3)
BS EN 1111 : 1999 Sanitary tapware. Thermostatic Mixing Valves (PN10) General technical specification & BS EN 1287: 1999 Sanitary tapware. Low Pressure Thermostatic Mixing Valves General technical specification (TMV2).
These valves have been independently tested and approved by the TMV3 scheme as a type 3 valve under the requirements of the NHS MES – DO8 and approved by Buildcert as meeting the requirements of the TMV2 scheme.
The element that controls the temperature of the mixed water discharging from the valve works proportionally on both hot and cold water supplies in order to maintain the temperature of the mixed water discharged.