Honeywell V4073A1039/U 22 mm Mid Position Valve

Introducing the Honeywell V4073A1039 Motorised Mid Position Diverter Valve, designed for domestic central heating systems with pumped radiator and hot water cylinder circuits. Suitable for small to medium installations, this 3-port mid-position valve provides precise control of water flow between radiator and hot water circuits. It is compatible with room and cylinder thermostats to deliver complete temperature management in fully pumped systems.

The valve features spring return action and three-position operation, with a replaceable powerhead that allows maintenance without draining down. A manual lever enables filling or draining, and the unit operates quietly while consuming minimal power. It provides electrical output to both boiler and pump and is available in 22mm, 28mm, or 3/4 inch sizes.

Designed to work with Sundial Y Plan for straightforward wiring, and compatible with alternative wiring options using the Honeywell Sundial Plans Wiring Centre or 10-way Junction Box, this valve is a practical choice for controlled heating in compact installations.

Features

• 3-port mid-position diverter valve
• Spring return action and three-position operation
• Powerhead replaceable without draining down
• Manual lever for filling or draining
• Quiet operation and low power consumption
• 22mm, 28mm, or 3/4 inch sizes