UK trade guideToilet & Cistern 3 min readUpdated 11 July 2026

How to Replace a Thomas Dudley Miniflo 42mm Flush Plate (UK)

Swap a Thomas Dudley Miniflo 42mm concealed-cistern flush plate in a UK bathroom. Dual-flush levers, seals, adjustment.

Thomas Dudley

Identify

Confirm your Thomas Dudley frame series — Miniflo 42mm plates only fit specific in-wall carriers. Look on the inspection window for the frame's date-stamp and part number.

Remove the old plate

Pull the Thomas Dudley Miniflo 42mm plate away from the wall (magnetic or clip-on). Disconnect the two flush levers or pneumatic tubes from the top of the cistern.

Fit the new plate

Adjust the Thomas Dudley Miniflo 42mm lever rods to length. Reconnect, refit the plate. Test full and reduced flush volumes (6 L / 3 L standard UK).

Frequently asked questions

Will the Thomas Dudley Miniflo 42mm fit any concealed frame?
Only Thomas Dudley-brand frames. Cross-brand fitting rarely aligns.
Do I need to isolate water?
No — the plate is external; you only touch the flush actuators, not the fill valve.
Shop the spares

Browse toilet & cistern6,230 live parts.

View Toilet & Cistern