Grohe Pneumatic Clear Flush Valve Air Bellows (43506000)

Grohe Pneumatic Clear Flush Valve Air Bellows. Suitable for Grohe 37762SH0 and 37945SH0 cisterns. If your Grohe Adagio cistern isn't flushing properly, it could be that this has a hole in it. This then can't generate enough pressure to produce a good flush. You can test this by disconnecting the air tube connected to the button and blow down the tube. If the valve flushes, then it will be the bellows or button which is faulty. If the valve doesn't flush, it may be a faulty flush valve. Genuine brand new Grohe product, covered by a Grohe manufacturer's guarantee.