The 28 mm motorised 3‑way mid‑position valve from Tower is the reliable heart of any fully pumped heating or boiler system. Designed for 28 mm compression fittings, this genuine original valve switches water flow between three positions – hot‑water only, heating only, or both at the same time – when paired with a room thermostat, cylinder thermostat and programmer.
Key benefits
– Precise control – motor‑driven spring‑return actuator delivers smooth switching with an auxiliary 3 A resistive switch.
– Easy installation – includes compression fittings, a 1 m cable and an integrated manual lever for quick commissioning.
– Flexible mounting – can be fitted vertically or horizontally to suit any pipe layout.
Technical snapshot
– Supply: 240 V AC 50 Hz | Power: 6 W
– Operating temperature: +5 °C to +88 °C
– Max differential pressure: 1 bar | Max static pressure: 10 bar
– Max ambient temperature: 52 °C
– Cable length: 1 m | Switch rating: 3 A resistive
All wiring follows IEE regulations (white – room thermostat call/heating on; grey – cylinder thermostat sat/hot‑water off; orange – cylinder thermostat call/boiler & pump; blue – neutral; green & yellow – earth). The valve must be earthed and disconnected from mains with at least a 3 mm contact separation on all poles; installation should be performed by a qualified electrician.
Why choose Tower?
Tower’s reputation for durability and compliance means you get a valve that meets industry standards, comes boxed with full installation instructions, and offers long‑term peace of mind for residential or commercial heating systems.
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