Products tagged with 'honeywell automatic bypass valve'

The Honeywell Home DU144 22mm Straight Automatic Bypass Valve (DU144A1001) is designed for central heating systems to maintain a minimum flow rate through the boiler and help regulate system pressure. By automatically adjusting the bypass flow in response to changes in system demand, it helps maintain hydraulic balance and reduce unwanted noise within the heating circuit.

Manufactured from durable brass, this straight-pattern automatic bypass valve features 22mm compression connections and an adjustable differential pressure range of 0.1–0.6 bar. It is factory-set at 0.2 bar, with a lockable pressure setting to help prevent accidental adjustments once correctly commissioned.

The DU144 provides a practical solution for domestic central heating installations where a controlled bypass circuit is required.

The Honeywell Home DU145 22mm Angled Automatic Bypass Valve (DU145-3/4B) is designed to maintain consistent differential pressure and minimum water flow within central heating systems. By automatically regulating bypass flow as heating demand changes, it helps maintain boiler circulation, reduce unwanted system noise and support efficient heating system operation.

Manufactured from durable brass, the DU145 features an angled body design with 22mm compression connections for straightforward installation. It offers an adjustable differential pressure range of 0.1–0.6 bar and a high flow capacity of up to 50 litres per minute.

The valve is particularly useful in systems where thermostatic radiator valves or other control valves close, helping maintain circulation and reduce flow noise as system pressure changes.