Aqualisa Green High Pressure Thermostatic Cartridge — 022803
The Aqualisa Green (022803) thermostatic cartridge uses a patented bi-metallic coil to precisely control your shower temperature. Specifically designed for Unvented High Pressure water systems, it features a built-in fail-safe that shuts the shower down if a water supply is blocked, preventing accidental scalding. Includes gasket, filter, and fixing screws.
Technical Identification:
MPN: 022803 | System Type: High Pressure / Unvented | Compatibility: Dream, Hydramax, Opto | Includes: Gasket, Filter & Screws
This Product Fits:
- Aqualisa Dream (Concealed & Adjustable)
- Aqualisa Hydramax (BIR / BIV / EV)
- Aqualisa Opto Thermostatic Recessed
- Gainsborough Ambassador (Concealed & Exposed)
- Compatible with 30kW - 35kW+ Boilers
Installation & Safety
Ensure all water supplies are isolated before starting. We recommend covering the waste outlet to avoid losing small screws. Important: This product is supplied with a manufacturer security seal. Returns cannot be accepted once this seal is broken.
Common Questions
Can I swap my Orange cartridge for a Green one?
No. You must replace your cartridge "like-for-like." The Green cartridge is calibrated specifically for High Pressure/Unvented systems and will not function correctly on Gravity/Low Pressure systems.
Is this a genuine Aqualisa part?
Yes, FixTheBog are Official Aqualisa spares stockists. Buying genuine parts ensures a perfect fit and long-term reliability for your shower suite.



