Alcaplast Basicmodul Slim Dual Flush Valve — A09B (FTB14369)
The Alcadrain (Alcaplast) A09B (FTB14369) is an authentic original equipment manufacturer (OEM) replacement mechanical dual-flush valve mechanism designed specifically for Basicmodul pre-wall concealed cisterns and slimline WC systems. Engineered to direct factory tolerances, this mechanism replaces passing, worn, or calcified valves, restoring smooth and consistent dual-flush performance while providing an immediate watertight base seal to prevent water continuously trickling into the toilet pan.
Identification Guide:
Brand: Alcadrain (formerly Alcaplast) | Manufacturer MPN: A09B | Internal SKU: FTB14369 | EAN: 8594045930252 | Dedicated System: Basicmodul Concealed Cisterns (A112 / AM112) | Operation: Mechanical Dual Flush
Key Features
- Original Fit: Built directly by Alcadrain to factory specifications to fit seamlessly inside the Basicmodul cistern body and base cradle.
- Mechanical Dual Flush: Actuated mechanically via the push rods of compatible front-mounted mechanical flush plates.
- Calibrated Flush Regulation: Slide adjusters allow fine-tuning of full flush (6L to 9L) and reduced eco flush (3L to 4L) volumes.
- Scale & Chemical Resistance: Molded from premium ABS polymer to resist lime accumulation, sticking, and premature degradation in hard water areas.
- Watertight Base Seal: Equipped with an authentic silicone sealing washer to prevent continuous passing and internal leaks.
Installation & Compatibility Notes
The A09B flush valve is specifically engineered for Alcaplast / Alcadrain Basicmodul pre-wall systems (models A112 and AM112). It is not designed for ceramic close-coupled cisterns, pneumatic push-button systems, or other manufacturers' frames. Maintenance and replacement are performed directly through the service aperture behind the front flush plate without needing to remove the cistern or alter surrounding tiles.



