“Have bought a manual valve to replace thermostatic shower valve (which was pain in the ass as could not regulate a water flow with it). After replacing the thermostatic one to manual valve - felt like fresh breeze, with manual valve you can regulate a water flow and temperature easily.
Recommend. Simple design, easy to install, just need to buy additional compression coupler male adapter 15mm x 1/2 (in b&q/wickes ) to connect water hoses”