
Item Description
AG1378 Mechanical Dual Flush Valve
Mechanical Actuation 2" Outlet Dual Flush
The AG1378 (FTB6915) is a high-quality replacement mechanical flush valve designed for universal compatibility with standard close-coupled and low-level cisterns. Unlike pneumatic valves that rely on air tubes, the AG1378 uses a direct mechanical bridge, providing a more tactile and durable flushing action. This valve is the professional’s choice for quick repairs, featuring a modular design that allows the main body to be removed from the base with a simple twist, making future seal replacements effortless.
Identification Guide:
MPN/Ref: AG1378 / FTB6915 | Flush Type: Dual Flush (Full & Eco) | Outlet Diameter: 2" (approx. 50mm) | Operation: Mechanical Bridge
Key Features
- Cable-Free Reliability: Eliminates the common failure points of pneumatic tubes and cable snags.
- Adjustable Height: The telescoping overflow pipe allows the valve to fit a wide variety of cistern heights.
- Easy Maintenance: The "bayonet" style base allows the valve body to be unclipped without removing the entire cistern.
- Water Saving: Features adjustable float settings for both full and partial flushes to maximize efficiency.
Installation Note
When installing the AG1378 for the first time, ensure the base basket is securely tightened against the cistern floor. If you are replacing an existing AG1378, check if your current basket is in good condition; if so, you can simply "twist-in" the new valve body. Ensure the top button/actuator is aligned correctly with the valve bridge for smooth operation.
Need help figuring out if this product is right for your setup?
Send us your best bathroom selfies (or, you know, just your bathroom setup pics) to [email protected] or WhatsApp 07359 625424 us, and we'll help you flush your confusion away!




