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mira excel cartridge 903.33

This question is regarding Mira Excel (1990-96) Cartridge - 903.33

replaced cartridge 2 years ago, just had a new boiler fitted (more pressure), shower head started to leak. Can i get away with just replacing the 'O' seal in the cartridge? cheers.

Asked 7 years ago by Anonymous
Thereshould be a red key that fits in to two holes at the back of thecartridge high and low stamped into the back of the cartridge using thekey you turn the back of the cartridge to high or low. High for combi boilers and pumps over 2 barLow for gravity systems and pumps under 2 bar

But if this does not work it is a new cartridge I `m afraid as these are non serviceable.
Answered 7 years ago by Barrie Seabright
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