low cold water pressure

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  • June 16, 2007 at 2:45 pm #28190
    Tom
    Participant

    ❓ I’ve had cases recently washers & dishwashers where cold water was supplied from tank in loft (single storey) resulting in intermittent behaviour likely due to time out on the fill.
    There seems to be a reasonable flow of water.
    Is there any known mod (like a different fill valve)?
    Does anyone know of new machines with the all mechanical timer?
    Many thanks in advance,
    tom

    June 16, 2007 at 3:53 pm #217301
    smartin
    Participant

    Re: low cold water pressure

    they used to put flow control washers in the valves behind the removeable filters, i used to take them out and that improved the flow but customer must know incase they take machine elswhere with higher pressure smartin

    June 16, 2007 at 5:05 pm #217302
    Bryan
    Participant

    Re: low cold water pressure

    Tom , as far as I know all cold water should be fed directly off the mains water supply. Storage tanks are for topping up central heating and hot water tanks etc.

    I wouldn’t want to drink water that came from any sort of storage tank and any appliance should be fed from the same source.ie mains supply.

    HTH

    Bryan

    June 16, 2007 at 5:21 pm #217303
    iadom
    Moderator

    Re: low cold water pressure

    Unless the have spring water, then you need a tank in the loft.

    Jim.

    June 17, 2007 at 1:27 pm #217304
    Tom
    Participant

    Re: low cold water pressure

    Thanks for comments.
    Situation usually arises in rural areas where water is pumped from a well into a tank in loft. Cold water for drinking & cooking taken directly from the pump line.
    As I retail appliances I’ll keep looking for machines (maybe with older technology) to cope with this niche situation.
    I’ve been wondering if washing machines with hot & cold fill might have to allow enough (longer) time for filling; a hot fill will almost always be from a low pressure supply.
    Regards,
    tom

    June 17, 2007 at 4:30 pm #217305
    dpm
    Participant

    Two words: boost pump.

    June 17, 2007 at 8:39 pm #217306
    spanner51
    Participant

    Re: low cold water pressure

    as far as I know all cold water should be fed directly off the mains water supply.

    A few years ago I saw a few machines fed of a cold water tank in a commercial situation. This was done on machines which didnt have the type ‘A’ air gap, to comply with the WRAS regulations.

    The customer had bought a domestic machine to save money, so I used to install a Stuart RG25 pressure pump, which solved the low pressure problem.

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