I want to put an iso valve on each of the hot+cold 15mm supply pipes (both pressurised) to my Aqualisa thermostatic shower mixer. They will be hidden under floorboards (don't ask - there's really nowhere else for them in this case), and there is easily room for the larger gate valves. Which valve type least inhitbits free flow of pressurised water when open?
- posted
19 years ago