Honeywell Automatic Bypass and Differential Pressure Valve

• Unique and simple adjustment mechanism
• High flow-50l per minute
• Wide differential range 0 1-0 6 bar
• 22mm Compression for ease of Install
• Ensures constant flow through boiler

Product Description The DU145 Automatic Bypass Valve controls flow of water through a bypass circuit which is installed between flow and return pipework, typically at or near the boiler. Building Regulation advice states that if a bypass is installed, an Automatic Bypass Valve must be fitted. The DU145 saves energy by only allowing flow through the bypass when needed i.e. when flow through the system is reduced when zone valves or radiator thermostats are closing. The use of an ABV is recommended by the UK government as Best Practice in the CHeSS (Central Heating System Specifications) guide to central heating systems. Box Contains 1 x DU145-3/4B Auto Bypass Valve