Honeywell Dual Auto By-Pass Straight (22mm) DU144

Honeywell Dual Auto By-Pass Straight (22mm)

Manufacturers Part No: DU144

The Honeywell Dual Auto By-Pass Straight (22mm) 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 DU144 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.

• Unique and simple adjustment mechanism
• Wide differential pressure range 0.1 to 0.6 bar
• 22mm compression fittings for ease of installation
• Reduces system noise and maintains an even system pressure
• Ensures constant flow through boiler
• Lockable set pressure prevents inadvertent adjustment
• Factory set at 0.2 bar

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  Installation guide

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  Product specification

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