Dudley OSMO® T1

Top access concealed reversible cistern with AXIS Technology™

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Overview

The Thomas Dudley OSMO T1 is a precision-engineered, top-access concealed cistern specifically designed to meet the rigorous demands of the off-site construction and pod markets. Featuring innovative AXIS Technology™, the OSMO T1 offers a unique reversible body that provides multiple inlet and outlet options as standard. This makes it the definitive solution for GRP, timber, and steel-framed pods, as well as compact voids and IPS installations.

Manufactured in the UK, the OSMO T1 is the only Fluid Category 5 compliant cistern capable of meeting strict water regulations within standard-height pod shelves. It combines high-performance engineering with the Flush Pipe Stability System (FPSS™) and SureLock™ Bracket to ensure total structural integrity during transport and installation.

The OSMO T1 leads the market in sustainability, featuring a factory-set Niagara flush valve and a Hydroflo Delay Fill inlet valve. This combination allows for dual-flush volumes as low as 4/2.6L, while the delay-fill technology saves up to 0.5L of drinking water per flush. Fully WRAS approved and supplied factory-assembled with a reversible SnapLock lid™, the OSMO T1 delivers a secure, future-proof, and “plug-and-play” solution for high-volume modular developments.

Brochure

Helpful files

Datasheet Instructions

Features

WRAS Approved cistern assembly
WRAS Approved Dudley Niagara pneumatic flush valve
WRAS Approved Dudley Victoria cable flush valve
WRAS Approved Dudley Hydroflo 7s Delay Fill Brass Tail Inlet Valve (Side or Bottom Inlet)
Easy top access with reversible SnapLock lid™
Factory Assembled
Pneumatic push button / plate can be installed up to 250mm away from cistern
Unique reversible cistern body due to AXIS Technology™ achieving multiple outlet and inlet options
Flush Pipe Stability System (FPSS™) with SureLock™ Bracket
Multiple Flushing Volumes: 6/4 – 5/3 – 4/2.6 ltr (Alternative volumes upon request)
Fluid category 5 cistern; the only way to achieve a water regulations compliant cistern in standard height pod shelves
Available with offset flush outlets and varying flush volumes
Stock Item - Available for next working day dispatch

For Specifiers

Classic Confidence: Proven Performance in Every Space

Thomas Dudley’s range of high-quality concealed cisterns represents the gold standard for classic modern design, delivering seamless integration across domestic and commercial applications. Engineered for total reliability, these cisterns provide a “fit-and-forget” solution for installations within fitted furniture, behind walls, or within most partitioning materials.

Efficiency Without Compromise

We recognise that a specifier’s priority is to reduce project timeframes and minimise on-site costs. Thomas Dudley concealed cisterns are specifically designed to address these needs, featuring intuitive designs that significantly accelerate installation and simplify long-term servicing.

Sustainable Value

By integrating proven water-saving technologies as standard, our cisterns allow specifiers to offer clients tangible reductions in utility costs and environmental impact. With Thomas Dudley, you can specify with total confidence, knowing you are delivering a cost-effective, durable, and highly efficient solution that enhances any modern architectural vision.

A vast range of pushbuttons, push plates, levers and touch-free electronic sensors are also available to provide the perfect finishing touch to any project. Click Here to view Range

Click Here to download the OSMO T1® Brochure

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