Oct 2, 2019
Bristan CART 06734B Compatible Thermostatic Shower Cartridge Replacement
https://www.divapor.com/spares/showers/thermostatic-cartridge/bristan-cart-06734b-thermostatic-cartridge-push-fit-with-spring.php
CART 06734B compatible showers: + Bristan Prism PM + Bristan Compass + Bristan Qube + Bristan Fairfax
The CART 06734B is a push-fit type cartridge with spring. If the cartridge you have does not include a spring, it is a different Bristan spare part with threads on the cartridge.
Use our shower valve spare part identifier should you have any trouble determining which replacement part you need.