🚰 Bathroom Plumbing

Concealed Cistern

A concealed cistern is an in-wall flush tank, usually mounted in a support frame behind a false wall, feeding a wall-hung or floor toilet via a hidden outlet. Flush is triggered by a front- or top-mounted actuator plate.

⚠️ Note: Rough-in dimensions, flush volumes, and frame load ratings vary by model and market — confirm against the specific datasheet before ordering.

Typical specification

PropertyTypical value
TypeIn-wall concealed / frame-mounted flush tank
MaterialMoulded plastic (typically HDPE/PP) tank; steel support frame
Rough-inFrame depth and fixing height vary — typical set-out ~1.0–1.2 m to plate; confirm against datasheet
Flush volumeDual-flush, typically ~3/6 L or 4.5/6 L (varies by market/standard)
Water inlet1/2" (DN15) side or bottom fill valve
Waste connectionConcealed flush pipe to pan, typically 90 mm outlet
StandardRegional flush/water-efficiency standards (e.g., EN 14055); confirm per market

Indicative / typical values for planning — actual products vary by manufacturer and standard. Confirm the final spec sheet before ordering; we do not publish fixed prices, request a quote for current offers.

Applications

Used in bathrooms where a clean, minimal wall face is wanted, especially with wall-hung toilets in residential and commercial fit-outs. Common in renovations and new builds using dry-wall or block partitions.

What to specify when you request a quote

Related in Bathroom Plumbing

Shower MixerBidet Spray← All bathroom plumbing

FAQ

Can a concealed cistern be serviced after the wall is closed?
Yes — service access is through the actuator plate opening, which allows fill/flush valve replacement without removing the wall. Confirm the model's access provisions on its datasheet.
What toilet pans work with a concealed cistern?
Frame-mounted units suit wall-hung pans; cistern-only versions can feed floor-mounted pans. Match the flush pipe outlet and set-out to the chosen pan.

Request a Concealed Cistern quote

Send your sizes and quantities (or your floor plan) — our team specs and supplies against it.

Get a Quote