The VAL322MP is a genuine Tower‑brand motorised 22 mm 3‑port mid‑position valve designed for modern fully‑pumped central‑heating systems. With spring‑return actuation and a 230 V AC switched output, it seamlessly directs boiler water to hot water only, heating only, or both at the same time – perfect for homes that need flexible temperature control.
Key features
– 22 mm compression fittings (included) for quick installation
– 240 V AC / 50 Hz supply; 6 W power consumption
– Integrated manual lever for easy commissioning
– Auxiliary 3 A resistive switch and optional auxiliary switch
– Horizontal or vertical mounting flexibility
Performance specs
– Operating temperature: +5 °C to +88 °C
– Max differential pressure: ≤ 1 bar; static pressure up to 10 bar
– Cable length: 1 m; ambient rating up to 52 °C
The valve works with standard room thermostats, cylinder thermostats and programmable controllers. Wiring follows IEE regulations (white – heating call; grey – hot‑water off; orange – boiler call; blue – neutral; green/yellow – earth). All connections must be earthed and isolated with a minimum 3 mm contact separation.
Installation is straightforward: read the included plumbing and wiring guide, set the Auto/Manual lever to “Manual Open” when fitting or servicing, and use wrench flats on the body—not the actuator—for leverage. A complete boxed kit arrives ready for a professional electrician to finish the job safely and efficiently.
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