UK trade guideToilet & Cistern 3 min readUpdated 10 July 2026

How to Replace a Thomas Dudley Vantage Flush Plate (UK)

Fit a new 324309 plate on the Thomas Dudley Vantage concealed cistern. UK access, cable length and dual-flush setup.

Thomas

Plate SKU

The Thomas Dudley Vantage uses the 324309 plate. Alpine white, chrome and matt-black share the mechanism — only the escutcheon changes.

Access

Turn off the isolation valve inside the cistern. Prise the plate off (small lugs top-centre on Thomas). Disconnect the two flush cables — note lengths.

Fit

Cable-set to 30 mm exposed core. Clip to actuator. Test full and half flush before pushing plate home.

Frequently asked questions

Do I need to drain the cistern?
No — isolate the fill valve inside, flush once, then work on the plate. Cistern stays wet.
Are plates interchangeable within the range?
Yes — all Thomas Dudley plates fit the same UP320/UP720 frame.
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