This question is regarding Mira Excel/Select Thermostatic Cartridge - 903.33

High Pressure (Green Knob) Cartridge.

Can I replace a 903.33 that has a purple knob with one that has a green knob (high pressure) in the front. My current Excel shower runs on low pressure settings. Thank you.
Asked 11 years ago by Anonymous

The cartridges are now all purple and you change the setting for high and low pressure at the rear of the cartridge, before fitting.

Answered 11 years ago by The Shower Doctor

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