Hi All.
Would appreciate any advice on below problem\situation - desperate to get sorted and job signed-off!
Sorry for length, wanted to add all detail.
Customer had existing bath and mixer tap with a shower head that apparently worked fine as a shower. Cold is mains pressure, hot is gravity fed via what I think you call a vented system(?)
I swapped the bath and fitted new mixer\head. Span the bath round so tap-end was at opposite end - better suited for new shower screen - I simply extended supply and waste pipes from existing positions.
Cold supply is and was via 15mm copper.
Hot was off a 15mm "T" from a main 22mm pipe. It went through a 15mm elbow and another 15mm "T". Off this "T" was a drain valve and the other outlet of the 15mm "T" went to the hot water tap - via a 15/22 and short length of 22mm copper pipe. All appeared old and as if provided at time of original build. As customer said all worked fine, I cut back to the 15mm, extended to the new mixer via 15mm - before a final 15/22 near the tap.
Customer reports new mixer is unusable, no hot water pressure for shower!!!
My understanding is\was that the throughput of any pipe is governed by the smallest bore on the run - and thought if I made all my run out of 22mm my overall flow's governed by the short length of 15mm anyway - which previously worked fine?
I fitted service valves and flexi hose with install, am to return and check these are fully open and not twisted; as well as putting old shower head back on, 'cos tiny new one has about a quarter of the spray holes as the old one - a restriction?
In the past, when doing simple swap-outs of mixer taps, I get the same complaint. Then find that strainers\filters fitted in the mixer tap for the shower hose connection restricts flow, and removing gets rid of any complaints. This unit seems fully sealed with a rotating base for the hose. All internals seem to be ceramic.
Any ideas?
Or what are my options..... hopefully not having to chop the 22\15\22 "T" out and replace with 22mm throughout - hopefully?
Would appreciate any advice on below problem\situation - desperate to get sorted and job signed-off!
Sorry for length, wanted to add all detail.
Customer had existing bath and mixer tap with a shower head that apparently worked fine as a shower. Cold is mains pressure, hot is gravity fed via what I think you call a vented system(?)
I swapped the bath and fitted new mixer\head. Span the bath round so tap-end was at opposite end - better suited for new shower screen - I simply extended supply and waste pipes from existing positions.
Cold supply is and was via 15mm copper.
Hot was off a 15mm "T" from a main 22mm pipe. It went through a 15mm elbow and another 15mm "T". Off this "T" was a drain valve and the other outlet of the 15mm "T" went to the hot water tap - via a 15/22 and short length of 22mm copper pipe. All appeared old and as if provided at time of original build. As customer said all worked fine, I cut back to the 15mm, extended to the new mixer via 15mm - before a final 15/22 near the tap.
Customer reports new mixer is unusable, no hot water pressure for shower!!!
My understanding is\was that the throughput of any pipe is governed by the smallest bore on the run - and thought if I made all my run out of 22mm my overall flow's governed by the short length of 15mm anyway - which previously worked fine?
I fitted service valves and flexi hose with install, am to return and check these are fully open and not twisted; as well as putting old shower head back on, 'cos tiny new one has about a quarter of the spray holes as the old one - a restriction?
In the past, when doing simple swap-outs of mixer taps, I get the same complaint. Then find that strainers\filters fitted in the mixer tap for the shower hose connection restricts flow, and removing gets rid of any complaints. This unit seems fully sealed with a rotating base for the hose. All internals seem to be ceramic.
Any ideas?
Or what are my options..... hopefully not having to chop the 22\15\22 "T" out and replace with 22mm throughout - hopefully?
.
