Tag: central heating

VAL222MV 22mm Zone Valve — a pragmatic choice for straightforward domestic zones

By Mike

A compact 22mm two‑port motorised valve with a low‑power synchronous actuator, spring‑return fail‑safe and an auxiliary end‑switch. Suitable for most fully‑pumped domestic heating zones where simple on/off control and boiler interlock are needed — but not the right fit for systems demanding modulating control, high flow differentials or heavy electrical switching.

Tower VAL322MP 3‑Port Mid‑Position Valve: A practical choice for standard UK wet central heating

By Mike

A compact, low‑power 22 mm mid‑position motorised valve that suits typical fully pumped domestic heating systems. This review explains how the VAL322MP behaves in everyday installations, its wiring and mounting implications, compatibility limits — especially the 1 bar differential rating — and what owners and installers should expect for maintenance and long‑term use.