The Honeywell V4043H1056/U is a highly dependable 22mm two-port motorised zone valve engineered for precise flow control within domestic and light commercial central heating frameworks. Designed as a normally closed configuration, it incorporates potential-free end switches specifically intended for the electrical regulation of circulating pumps or boiler units. The device operates on a standard 220-240VAC supply with a minimal power consumption of just 5W, ensuring high electrical efficiency. It supports a fluid temperature range spanning from +5°C to +88°C and can withstand a maximum static pressure of 8bar, alongside a close-off pressure of 1bar.

Installation and ongoing maintenance are heavily streamlined by the inclusion of a fully replaceable powerhead, which can be swapped out without the need to drain down the entire hydraulic system. The valve actuator features a spring return action and a manual lever to facilitate straightforward system filling and draining. Supplied with a 1m connection cable, the unit delivers a rapid response opening time of 12 seconds and a closing time of 5 seconds, providing responsive and reliable zone control for modern heating circuits.

Q: Can the powerhead be replaced without draining the heating circuit?
A: Yes, the actuator head is designed for independent removal, eliminating the need to drain the hydraulic system during replacement.

Q: What are the standard response times for valve operation?
A: The motorised valve features a responsive opening time of 12 seconds and a rapid spring-return closing time of 5 seconds.

Q: Does this model include a manual override mechanism?
A: It features a manual lever integrated into the actuator specifically for filling and draining procedures.

Q: What is the maximum static pressure this valve can handle?
A: The brass valve body is engineered to withstand a maximum static system pressure of 8bar.