Removing bath tap cartridge

16 Jun 2006
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United Kingdom
Hi all

I need to remove a ceramic cartridge but I am not too sure how to.

The tap has two levers, the hot one is the offending one, letting a drip/stream run by.

I used an allen key to remove the lever and discovered that the plastic part of the cartridge extends about 3 mm above what looks like a brass retaining nut. The clearance around the recessed nut is about 4-5mm all the way around.

A spanner will not fit and I am not sure that a long reach socket set will either (the walls might be too thick). I guess that I need to find a large box spanner (32mm?).

Before (possibly) wasting money on a box spanner can anyone confirm that the cartridge is indeed being held down by the nut. I guess that all such cartridges are designed to be removable.

For what it is worth the tap is a non branded one from bath store 5+ years ago. The bath is cast iron with an iroko top plonked on it. Replacing the taps would involve removing the wooden top first to get to the back nuts as the taps are connected to the work top rather than the bath (because of the length of the tails)- something I'd rather not do.

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I would try a socket set, if the wall of the socket is too thick then grind the edge down until it fits.

Buy a cheap socket set from toolstation/screwfix.


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