I have a wall hung pan with a concealed cistern. The flush is the "old style" Grohe Eau2 dual flush pneumatic button. When pressed the flush valve lifts lightly and closes giving a very short weak flush. You can manually lift the flush valve in the cistern and it moves freely, flushes fine and closes normally. Connecting air hoses are intact. Is the fault likely to be in the button mech or a problem with the valve.
Also can anyone recommend a single a single flush button that is a direct replacement for the dual flush Grohe Eau2 "old style" - ideally same diameter. The original is rubbish and the buttons easily snap off. Grohe say there is none (not even the new version of the Eau2).
Also can anyone recommend a single a single flush button that is a direct replacement for the dual flush Grohe Eau2 "old style" - ideally same diameter. The original is rubbish and the buttons easily snap off. Grohe say there is none (not even the new version of the Eau2).