This pack of 2 Honeywell 22mm motorised 2 port zone valves have a wide range of flow control applications in domestic and light commercial central heating systems. V4043H (normally closed) models have end switches for electrical control of pump and/or boiler.

• Spring return action
• Manual lever for filling/draining the system
• Powerhead replaceable without draining down
• Potential free end switch for electrical control of pump and/or boiler
• Quiet operation
• Minimal power consumption