The Honeywell Dual Automatic By-Pass Valve 22mm (Straight) is designed to regulate water flow within a central heating system by responding to changes in water pressure across the valve. It helps maintain a minimum flow rate through the boiler while limiting circulation pressure when other water pathways, such as radiator valves or zone valves, close. By automatically balancing system pressure, this valve ensures consistent water circulation, helping to protect the boiler and improve overall heating system efficiency. It also contributes to quieter operation by reducing noise caused by pressure fluctuations.

Reliable Heating System Control

The valve operates by adjusting the bypass flow according to the differential pressure within the heating circuit, maintaining optimal conditions throughout the system. This ensures a steady flow through the boiler while preventing excessive pressure build-up when heating zones close.

Key Features :

• Automatically controls water flow based on system pressure

• Maintains a minimum flow rate through the boiler

• Helps limit circulation pressure when other water paths close

• Reduces system noise and improves system balance

• Durable valve housing with compression fittings for 22mm copper pipe

• Spindle-and-plug assembly for precise flow regulation

• Bonnet with differential pressure setpoint markings

• Handwheel for easy differential pressure pre-setting

• Includes protective cap

• Available in straight or angled valve configurations

• 1-year manufacturer warranty