Grohe AV1 42320000 Flush Valve, complete with pipe extension, for concealed cistern

Grohe AV1 42320000 dual-flush valve, complete with pipe extension

Is your cistern running into the toilet, or has the button stopped working properly? The Grohe AV1 flush valve (part no. 42320000) gets your concealed cistern working again with a genuine Grohe spare part.

🛠️ Who is it for?

This valve is the right choice for Grohe concealed cisterns such as the GD2 or Rapid SL when the central component needs replacing. If water keeps running into the bowl after flushing, or the pneumatic actuation (the thin air tube) no longer lifts the valve, this is the part you need.

📋 Specifications and contents

Compare with your old part before ordering:

• 🔹 Part number: Grohe 42320000.
• 🔹 Actuation: pneumatic, via a single tube.
• 🔹 Function: dual flush and flush-stop.
• 🔹 Flush volume: adjustable. The valve seat is not included – for GD2 cisterns built before 2008 there is the Grohe 38736000 dual-flush retro-fit set, which includes the seat.
• 🔹 Materials: corrosion-resistant ABS body, long-lasting seals.
• 🔹 In the box: AV1 valve body, pipe extension, seal.

🔧 Fitting

Fitting is straightforward and needs no special tools. The pneumatic tube connects easily to the flush plate, and the genuine seal supplied keeps the cistern watertight again – no more trickle into the bowl and no wasted water.