Flush valve for concealed cisterns SIAMP 536 — universal spare for SINTRA, HERO, EXE, TARGET frames

The SIAMP Flush Valve 536 is a universal spare part designed for concealed cisterns and in-wall installation frames. It fits commonly used frames such as SINTRA, HERO, EXE and TARGET and replaces the cistern flushing mechanism to restore controlled water discharge in toilet systems. The valve is intended for maintenance and repair of built-in toilet modules and provides the essential function of regulating flush volume and flow.

Advantages

The valve offers wide compatibility with multiple SIAMP-compatible frames, enabling straightforward replacement without the need for a complete cistern overhaul. Its construction is aimed at reliable operation, ensuring consistent flush control and reducing the risk of leaking or incomplete flushes. The part is compact and designed to integrate with standard concealed cistern layouts, helping to simplify maintenance tasks.

Suitable for

• Repair of concealed cisterns in bathrooms using SINTRA, HERO, EXE or TARGET frames
• Replacement of a worn or malfunctioning flush mechanism in built-in toilet modules
• Plumbing maintenance where a universal, compatible flush valve is required

When it may not be suitable

This universal valve is intended for SIAMP-compatible in-wall frames and may not be suitable for non-compatible or proprietary cistern systems with non-standard connections or dimensions. If a cistern has integrated electronic or sensor-controlled flushing systems, this mechanical valve may not provide full functional replacement.

Key specifications

• Type: Universal mechanical flush valve for concealed cisterns
• Compatibility: Fits SINTRA, HERO, EXE and TARGET style in-wall frames
• Function: Controls water discharge and flush volume
• Installation: Designed for built-in cisterns and cassette-style modules
• Physical form: Compact valve body suitable for standard cistern cavities

How to use

Shut off the water supply to the cistern and empty the tank before beginning installation. Remove the access panel or frame cover to reach the existing flush mechanism, then disconnect and extract the old valve according to the cistern manufacturer’s guidance. Position the SIAMP 536 valve into the cistern, ensure seals and connections align, and secure it following the installation steps for the frame type. Reconnect the water supply, check for leaks and adjust flush settings where applicable to achieve the desired water volume.

What to consider before purchase

• Confirm that your in-wall frame is listed as compatible (SINTRA, HERO, EXE, TARGET)
• Verify the cistern uses a mechanical flush valve rather than an electronic or integrated system
• Check available access to the cistern to perform replacement without removing large sections of the installation

Usage recommendations

Use basic plumber’s tools and follow the cistern or frame manufacturer instructions during replacement. After fitting, inspect for leaks and perform a few test flushes to confirm correct operation and any necessary adjustments to flush volume.