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low water pressure only in kitchen

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  1. #1
    Member scubabob's Avatar
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    Default low water pressure only in kitchen

    my mains pressure warer pipe runs up to the bathroom/laundry part of the house then tees off and goes to the kitchen. Water pressure in the laundry is great but in the bathroom (next to laundry) and kitchen (about 10m) its crap. The main pipe is galv iron 3/4" then everything tees off to its relevant areas in 1/2" copper. If everything is the same pipe basically, shouldn't the pressure be equal? Anyone any ideas?
    You can't truly experience a rainforest without the rain

  2. #2
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    I would be looking at replacing the 3/4" gal with 3/4" copper to the second last draw off point. Even though gal looks nice on the outside it rusts from the inside out eventually choking the pipe. It will also have bits of sediment coming loose clogging up in aerators, 1/4 turn tapware, minicocks etc. In saying this Im assuming that its only the cold water?
    Also your 1/2" copper branches could be playing a part in this as there is restrictions on how far and how many fixtures can be picked up by 1/2" pipe.
    If it is the gal causing the problem and it also serves your HWS it will drastically reduce its life expectancy.
    Hope this helps.
    Plumbers were around long before Jesus was a carpenter

  3. #3
    Member scubabob's Avatar
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    Thanks for your time and expertise Wonderplumb. I will look into it. Cheers
    You can't truly experience a rainforest without the rain


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