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A source of water flow meters?

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  • A source of water flow meters?

    Hi,

    I am new to this forum, and have a question:

    I am looking for a decent but economical water flow rate meter for a permanent installation in an experimental / showcase hydronic heating + domestic hot water system, ideally satisfying these criteria:

    * Cost under $150, ideally under $60
    * Suitable for permanent in-line installation
    * Should display the current rate of water flow through it, in the range of 0 - 7 or 0-10 GPM or thereabouts.
    * Extreme accuracy not required. 5% or the ballpark would be OK
    * Up to 200 deg F water temp.
    * up to 150psi max. pressure
    * reasonably low head loss desired
    * 3/4" or 1" sweat or NPT connections desired, for inline type meters

    Any recommendations?

    Thanks

    Alex

  • #2
    Re: A source of water flow meters?

    http://www.omega.com/guides/rotameters.html
    "It's a table saw, do you know where your fingers are?" Bob D. 2006

    https://www.youtube.com/user/PowerToolInstitute

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    • #3
      Re: A source of water flow meters?

      I didn't research Bob's suggested website, but clicked it on and saw it was Omega. I used a lot of their products back in the early 90's when I worked for an engineering company which did a lot of r & d. You can probably get a ball type flow meter in pvc pretty cheap. They are not super accurate, but you said you didn't need that. The temp. rating may be a problem, with pvc.

      In any event good luck.

      If you don't find what you need contact Harrington, or as a last resort, Santa Fe Plastics. I haven't worked with them in twelve years, so I can't vouch for them, but they used to handle that sort of thing.
      the dog

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      • #4
        Re: A source of water flow meters?

        Try also Ryan Herco. In a pinch and you have a lot of time, Furguson can get anything you want for a price and wait.
        the dog

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        • #5
          Re: A source of water flow meters?

          OK Dog, you got my attention....what kinda R&D?

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          • #6
            Re: A source of water flow meters?

            Thanks Bob.

            Unfortunately these are all in the $500 range - which is unfathomable to me given the basic metering principle used. I can get a low-headloss in-line turbine flow meter with a digital readout for prices in that range.

            What I look for is a simple meter in a $150 range - do these even exist?

            Thanks

            Alex

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            • #7
              Re: A source of water flow meters?

              What do you folks think of these:
              http://www.instrumart.com/Product.aspx?ProductID=10171

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