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Thread: Water Controls

  1. #1
    Automated Home Legend chris_j_hunter's Avatar
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    Default Water Controls

    Paul seems to've found a good source of power meters ... has anyone found the equivalent for water (litres or cu.m), by any chance ... ie: reasonably accurate and affordable (& reliable) & Idratek compatible ! Ditto a water shut-off valve, hopefully quiet ... a meter & valve combination could be useful for stopping floods & giving measured amounts of water (bath, basin, kettle, cooking, etc) ... again Idratek compatible !

  2. #2
    Automated Home Sr Member n07tv's Avatar
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    Chris,

    Many years ago a builder friend of mine showed me a product which was at the time called "Frost Guard". Essentially it was 3 items, a pressure sensor, a solenoid valve and a box of electronics.

    The electronics was programmed such that it had a 'water allowed' timer period for each day. The pressure sensor (which I think was a cheap item using a magnet in a tube which was held in a location by the pressure) was fitted just after the stop-**** and should it detect a change, i.e. water flow during the allowed period everything was fine.

    The other time period was for when no-one was in the house (work, holidays etc) and should a change be detected then it closed the solenoid valve which was fitted just after the sensor, hence closing off the water to the property.

    This proved to be very successful in preventing flood damge from burst pipes etc. Most of this income was insurance claims for such and he was buying these in for about 50 and charging several hundred to fit them - the insurance were more than happy to cover that cost.

    Sadly I lost touch and can't remember the exact details, but I am sure something similar could easily be done with the IDRATEK system ... I've just never got round to it,

    N.

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    Automated Home Legend Paul_B's Avatar
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    Chris,

    One of the electrical sub-meter suppliers I found also do water meters:

    http://www.shmcomms.co.uk/products/o...ters.htm#Water

    Not sure if all water meters would be able to use the RF bridge or you would need a seperate meter on your own property in addition to the water company one. As long as something can supply a pulse output it is very likely Cortex can read it.

    Paul

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    Automated Home Legend chris_j_hunter's Avatar
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    Default Water Controls

    Paul -

    thanks, I'd missed those particular ones ...

    they all (those included), though, seem to be large & elaborate & expensive ... I was hoping for something simpler for application more widely (the parallel to your power meter) ...

    'wonder how vending machines work in regard to delivering measured amounts of water - maybe the same approach could be used instead, for fillings cups, kettles, washing hands, etc ...

    ie: I'm looking to automate all our taps, through Idratek !

    Chris

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    was thinking about this myself for bath filling.There seems to be plenty of options for solenoid operated water valves (http://www.betavalve.com/pdf/mini%20...ta%20sheet.PDF for example).

    The same people also have http://www.betavalve.com/flow.asp which may be useful.

    I've never used the company, just the first one that caught my eye atop my google search

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    Automated Home Legend chris_j_hunter's Avatar
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    well done, surprised I missed them ... looks to be just the sort of thing, up to 10 litres/min ... pulse output, etc ... latching option ... datasheet at

    http://www.betavalve.com/PDFs/Flow%2...r%20valves.pdf

    gives good info' ...

    looks good for most taps around the house ... not sure about bath, 'though slowish fill could be OK if it's automatic, and less-noisy too, probably ...

    thanks !

  7. #7
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    why thank ya....lucky find then!!

    As for the flow rate, i was thinking about having that meter in parallel with another larger solenoid valve, measuring a proportional flow with the solenoids triggered simultaneously.

    That's if it needed greater flow. As you say, lower flow may be a plus on a number of counts.Needs experimentation methinks.......

    And it can run off 24V so possibly use same power supply as for RVA's?
    Last edited by dazzlevw; 20th January 2008 at 10:15 AM. Reason: addition of more random thoughts

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    I've fired off an email to them to see about pricing and if they will supply in low quantities....I'll post back here if they reply

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    http://www.valvesystems.co.uk/catalo...4V-DC-p-9.html

    or this comes with a 3/4" bore for more flow....comes in at about 80 delivered for one, bit cheaper for larger orders....

    they do a variety of different bores, up to 10mm direct operated, larger than that are pilot operated

    more food for thought...

  10. #10
    Automated Home Legend chris_j_hunter's Avatar
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    >pricing ...

    'was trying to work-out how many we'd need ... depends on pricing, of course, but taps are expensive and using these would mean no taps (idea being to get local blacksmith / steel fabricator to make us some spouts, threaded for gauzes at one end, blue poly'-pipe at the other) so there's some margin to paly with ... first cut would be :

    basins, showers, loos etc - one each (one flow-rate at one temperature)
    kitchen & bucket sinks - three (two flow-rates at two two temperatures)
    machines - using these as isolators / sensors (one flow-rate & temp')
    showers - one each (one flow-rate & temp')
    bath - maybe two (for higher flow-rate at one temperature)

    so that would be, say, forty off - if affordable !

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