Zip AQ4 TMV2 Thermostatic Blending Valve Complete With 2 Check Valves

Will the pipework accommodate expanded water without hot water entering any supply pipe connected to a cold water draw-off? If expansion in the cold water main is restricted, e.g. by a valve or meter, an expansion vessel and other relevant accessories MUST be fitted.

The Zip Unvented Accessories are specially designed for those situations.