The 22 mm Motorized Mid‑Position 3‑Port Valve is a reliable, plug‑and‑play solution for modern central‑heating systems that use Honeywell V4073A, Sunvic or Siemens controls. Designed with a spring‑return actuator and 230 V AC switched output, the valve can direct boiler water to hot water only, heating only, or both simultaneously when wired to a room thermostat, cylinder thermostat and programmer.
Key features
– 22 mm compression fittings (included) for quick pipe connections
– Motorised spring‑return mid‑position design – no manual re‑setting required
– 240 V AC, 50 Hz supply; 6 W power consumption
– Integrated auxiliary switch (3 A resistive) and manual lever for commissioning
– Horizontal or vertical mounting flexibility
– 1 m cable with colour‑coded wiring (white, grey, orange, blue, green & yellow)
Performance data
– Operating temperature: +5 °C to +88 °C
– Max differential pressure: ≤ 1 bar
– Max static pressure: 10 bar
– Ambient temperature limit: 52 °C
Installation tips
1. Follow the included wiring diagram and plumbing instructions – all work must meet IEE regulations.
2. Set the Auto/Manual lever to Manual Open before removing or fitting the actuator.
3. Use wrench flats on the valve body for handling; never leverage the actuator.
Compatible with Honeywell V4073A (V4073A1039), Sunvic SDV2211 and Siemens CMV322A (CL MA1/679‑3). This is a high‑quality aftermarket part that meets industry standards while offering easy installation and precise control for fully pumped heating systems.
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