Grohe Adagio Toilet Cistern Inlet Float Valve Diaphragm Washer 4375800M

If your Grohe inlet valve won't shut off properly it could very well be that the diaphragm washer inside of the valve needs to be replaced.

Over time as the valve is continuously opening and closing, small tears can start to form in the diaphragm washer, in turn the diaphragm washer will no longer give a good seal. And debris in the water supply (which can be commonly caused by nearby work being carried out on the water supply) can also contribute overtime to this washer being worn.

Many make the mistake of purchasing a full replacement inlet valve at the first sign of any issue, replacing just this washer may save you a lot time and money in the long-term.

We advise purchasing a couple of these washers at a time so you've got one readily available in the event that the washer fails again in future.

Thickness: 25mm (Including both red tips)

Diameter: 27mm

Materials: Rubber and plastic.

Suitability: Suitable for all Grohe Adagio inlet valves.

Manufacturer: Grohe

Available Delivery Options:

£1 - Royal Mail Letter (2 - 3 Working Days)

£6 - Royal Mail Parcel (3 - 4 Working Days)

Please note: These delivery times are approximate and are only to be used as a guide. Delivery times may be longer or shorter than what is displayed due to factors outside of our control. 

We strongly advise against organising a plumber before you have received your order.