Tower 22mm Automatic Bypass Valve Boiler Pressure ABV 50L 3m3/hr

High capacity flow up to 50 litres per minute

Wide differential pressure range 0.1 bar to 0.6 bar

22mm Compression fittings

Reduces system noise

Maintains an even system pressure

Constant flow through boiler

Lockable set pressure

6 bar max working pressure

3m3/hr capacity

110°C working temperature

Installation should be in a loop between flow and return after the pump. Ensure that the flow is in the direction of the arrow on the valve body. Rotate the adjustment head until the required setting number is visible, and lock the valve at that point Home & Gardenby tightening the screw on top of the adjuster. Refer to recommendations in the boiler instructions and the pressure /flow rates detailed in the above product images to see which setting is required. 

This valve should be fitted where a boiler bypass is required. Typically this is the case when a system is equipped with thermostatic radiator vaIves (TRV‘s), and to allow pump overrun operation after zone valves have closed down. TRV's slowly close down as each radiator raises the room temperature. To overcome flow restriction as TRV's close down, the valve is adjusted to the required set point. As the system resistance increases due to TRV’s closing, the valve allows flow to Increase in order to maintain the required pre-set system differential pressure . The regulation provided will reduce system noise that can result from TRV's or zone valves closing, eliminate pump impeller wear that can result from high flow resistance and enhance the life of the boiler‘s heat exchanger by ensuring minimum flow rate at all times.