Slow flow hot water tap

AFAIK earlier threads have addressed two potential faults - pipe "restrictions" and tap washer/assembly issues. I can't remember if the OP's every came back with the cause. A suggestion to eliminate the "pipe restrictions" issue : with the tap assembly removed a plastic bag is placed over the tap body and sealed round the tap base with rubber bands and the bag cut so that (with someone watching!) when the hot water is turned back on the water discharges into the bath and you are able to see the flow rate.

PeterK

I addressed this in some detail a while back in another thread. If your tap has a plastic handle held on by a screw under the red cap, a circlip holding the mechanism in and a dome shaped washer they can develop a progressive wear fault which causes them to expand as they get warm and lock up on the hot water side. They seem to work fine on the cold. You won't easily see why there is a problem unless you're a better design engineer than the man who came up with them.

A new tap is the easiest cure unless you have a lathe and an engineering degree.

I had a similar problem about 5 years after having a new hot water tank fitted. Turned out that the slow flow was due to bit on insulating foam from the outside of the HW tank getting jammed in the tap - quick poke with a screwdriver sorted it. Another masterpiece of professionalism by the plumber who fitted the tank!

sam

If it's not too awkward to do, you could try swapping over the H and C taps to confirm whether there's an issue with the tap itself, or the water supply to the tap.

David