DIFFERENTIAL BY-PASS VALVES

WRc approved. This valve is very effective in systems where various heating loads may simultaneously be excluded from the circuit because of the closing of control or zone valves. It ensures a recirculation proportional to the number of valves that close avoiding noise and maintaining the head of the pump at a constant value. Fitted between flow and return, it helps prevent unnecessary cycling of the boiler.

Max. working pressure : 10 bar.
Max. working temperature : 110 °C.
Adjustment range : 1 m to 6 m head.
Part No.DescriptionUnit PriceQty
12161 22 mm compression differential by-pass valve £34.52

The ABV-1 automatic bypass and differential pressure valve with differential pressure indicator is used to maintain constant differential pressure in a heating system. It reduces flow noise as thermostatic radiator valves are closed. Fitted between the flow and return pipework, also helps to prevent unnecessary cycling of the boiler.

System capacities up to : 70 kW
Maximum working pressure : 3 bar
Maximum working temperature : 110 °C
Adjustment range : 0.1 to 0.6 bar/
factory set 0.2 bar
Fittings : 22 mm compression
Part No.DescriptionUnit PriceQty
17884 Automatic by-pass valve £9.50

Differential bypass valve is designed to prevent the pump from working against a closed circuit when all the 2 port control valves or thermostatic radiator have closed. Suitable for radiator, heating and chilled water circuits. Connections 22 mm compression.
SPECIFICATIONS :
Max. operating pressure : 10 bar
Max. operating temperature : 100°C
Adjustment : 1 - 6 m H2O, 0.1 - 0.6 bar
Part No.DescriptionUnit PriceQty
19570 22 mm Differential bypass valve £16.46