The Danfoss HP22 22 mm 2-Port Valve with HPA2 Actuator is a motorised control valve used in central heating and plumbing systems to regulate the flow of water through a single heating circuit. It combines a robust valve body with a Danfoss HPA2 actuator for reliable automatic operation.

Function & Purpose

This 2-port valve opens and closes in response to a control signal, usually from a thermostat or heating controller. When heat is demanded, the actuator drives the valve to the open position to allow hot water to flow through the circuit. When the demand ends, it returns to the closed position to isolate the circuit. This automatic control enables efficient zoning and helps ensure the heating system only operates when needed.

Compatibility

The valve is designed for 22 mm pipe connections, making it suitable for standard domestic and light commercial central heating systems that use 22 mm copper or compatible pipework. The HPA2 actuator interfaces with typical room thermostats, programmers, and boiler controls.

Design & Build Quality

The Danfoss HP22 valve body is engineered for durability and smooth operation, and the HPA2 actuator provides dependable, quiet movement. The actuator housing and valve construction are designed to withstand regular cycling and the pressures and temperatures found in heating systems.

Ideal Applications

This 2-port valve is ideal for zoning a heating system, controlling a single circuit (such as radiators), or controlling the flow to a hot water cylinder in simpler installations. It is suitable for new heating system installations, upgrades, and replacements where automatic flow control is required for comfort and efficiency.