Developed for professional installers, Opto shower cartridges, which use Aqualisa's tried and trusted bi-metallic, thermostatic showering technology, have been especially designed to extract an optimised performance from gravity, combi and high pressure systems - no matter the configuration.

* Overcomes exhaustion of hot water storage without impacting thermostatic performance
* Restricts flow at heart of cartridge, not through head or handset
* A shower with flow control at the heart of the valve, giving both thermostatic control and a great performance at the handset
* Max System Pressure Cold (Bar): 1 bar
* Min System Pressure Cold (Bar): 10 bar

** Please note that these items have been in storage for some time and the boxes have become damaged/shabby. The products themselves are pristine. Please be aware of this before buying. **​​​​​​​