Alca Uni Start / Stop universal WC cistern, 1/2" filling valve and flush valve A940-H-1/2"

START/STOP flushing system for universal mounting

The Alca Uni WC tank is an advanced solution utilizing the START/STOP flushing system, which allows for precise control of water consumption. The first press of the button initiates the flush, and the second press immediately interrupts it - this way, you use exactly the amount of water needed for an effective flush.

This system works particularly well in households concerned with water savings, while simultaneously providing full functionality for all users. The design has been developed with ease of use in mind, even for children and people with disabilities.

High-quality construction and materials

The tank body is made of ABS plastic - a material characterized by high resistance to mechanical damage and moisture. The use of ABS guarantees long-term durability and ease of maintaining surface cleanliness.

Special attention has been paid to thermal insulation - the tank is insulated against dew, which eliminates the problem of water vapor condensation on the surface. This solution not only improves the aesthetics of the installation but also protects against the formation of unwanted stains and streaks on the walls.

Universal mounting and installation flexibility

One of the greatest advantages of this model is its mounting versatility. The tank can be installed in three configurations: high-mounted (behind the WC bowl), mid-mounted, and low-level mounting. This flexibility allows for adaptation to practically any bathroom without the need for costly installation modifications.

Water supply is possible from three sides - left, right, or rear. This design significantly simplifies the installation process and allows for optimal use of the available hydraulic space.

Universal hangers have been designed so that their spacing and shape are compatible with most existing tanks available on the market. In most cases, replacing an old tank with a new one does not require drilling new mounting holes.

Operating parameters and water savings

The tank has a capacity of 8 liters with the possibility of regulating the amount of water released within the range of 6-8 liters. This regulation range allows for optimal adjustment of consumption to individual needs - a smaller amount is sufficient for daily use, while a larger amount is effective in more demanding situations.

The device operates in a pressure range of 0,05-1,6 MPa with a recommended working pressure of 0,3-0,5 MPa. This wide operating range ensures reliable operation even with unstable pressure in the water installation.

Acoustic group II (<30 dB) guarantees quiet operation of the device - it will not be bothersome to household members or neighbors.

Complete equipment and additional functions

The set includes all elements needed for installation: a filling valve (1/2") and a flush valve, as well as an elbow Ø50/40 mm for low-level mounting. Additionally, the manufacturer includes a complete flushing set consisting of a button for the low-level flush and a cord, handle, and lever for the high-level flush.

The economic flush setting function enables precise regulation of the volume of water used according to the user's individual preferences.

Please note one limitation: when the tank is mounted high, the STOP function remains unavailable - the system works only as a standard START (single full flush).