Motorized Valve Replacement Powerhead Actuator (No Brass Valve) Compatible with: Honeywell V4043 H1056, H1106, C1156, H1007, H1080 This replacement head fits 22mm, 28mm, 3/4″, and 1″ two-port zone valves, featuring a standard synchronous motor suitable for various applications including small bore central heating systems. It operates quietly with minimal power consumption. Features: Suitable for 2-port motorized valves Normally closed, motor open with spring return action Includes manual lever for system filling and draining Can be fitted without draining down Technical Specifications: Supply Voltage: 230V AC, 50Hz Power Consumption: 6W Fluid Temperature: +5°C to +88°C Max Ambient Temperature: 50°C Flow Direction: As indicated on valve body Response Opening: 12 seconds Response Closing: 6 seconds Max. Static Pressure: 8.6 bar Safety Note: Always isolate AC mains supply before handling the actuator assembly. Installation should be performed by a competent person following BS7671 (IEE Wiring Regulations) and Part ‘P’ of the Building Regulations.