Cartridge type
Just stick with the grey cartridge, it will cope with thepressure OK
The pink cartridge often known as the “High PressureCartridge” is really for combi boilers and is better able to cope with theunbalanced pressures.
Answered 11 years ago by The Shower Doctor
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Aqualisa Thermostatic Cartridge - All water systems (Grey) - 022801
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