Flush valve GEBERIT Twico 240.501.00.1 — dual flush valve for concealed cisterns

GEBERIT Twico 240.501.00.1 is a dual flush valve designed for concealed WC cisterns. It delivers two-stage flushing that helps reduce water consumption while maintaining effective discharge. The valve is compatible with a range of Geberit concealed cistern systems and is intended as a functional replacement part to restore sealing and flush control in installations where the original valve is worn or damaged.

Advantages

The dual flush mechanism provides selectable small and large flush volumes to optimise water usage. The valve design ensures reliable sealing to prevent leaks and controlled discharge for consistent flush performance. Its construction allows straightforward maintenance and replacement of worn components, reducing downtime and avoiding the need for full cistern replacement. The unit is engineered to integrate with concealed cistern assemblies and maintain user-friendly operation.

Suitable for

• Repair or replacement of a worn flush valve in compatible Geberit concealed cisterns
• Upgrading standard single-flush systems to a dual-flush operation where compatible
• Plumbing maintenance and service work in residential and commercial WC installations

Key specifications

• Dual flush functionality with two discharge volumes for water-saving operation
• Designed for installation in concealed cisterns compatible with the Geberit Twico series
• Sealing mechanism designed for leak prevention and consistent performance
• Durable construction suitable for routine maintenance and parts replacement
• Operates with standard cistern water pressure ranges typical for domestic and commercial systems

How to use

Turn off the water supply to the cistern and drain the tank before replacing the flush valve. Remove the cistern access or frame cover according to the cistern manufacturer’s instructions, extract the old valve assembly and install the new dual flush unit in the same orientation. Ensure sealing surfaces and connections are clean and properly seated, then restore the water supply and check for leaks and correct flush volumes. Adjustments, if required, should follow the cistern’s service guidelines to achieve the intended small and large flush settings.

Usage recommendations

Use original or compatible Geberit replacement parts and follow the cistern manufacturer’s installation instructions. Inspect seals and connections after installation and perform periodic checks to ensure continued leak-free operation and correct flush volumes.