This mixing valve delivers safe, blended hot water to taps, showers and other water outlets, making it ideal for use in hospitals, care establishments, schools and leisure centres. Has been independently tested and approved by the TMV3 scheme as a type 3 valve under the requirements of the National Health Service – Model Engineering Specification – DO8. Fail safe thermostatic DZR brass, chrome plated mixing valves designed to meet N.H.S. requirement DO8 and TMV 2, TMV 3 schemes. includes check valves and filters.