Advice on submersible pump

Discussion in 'Pumps and Tanks Well Forum & Blog. Water is life.' started by VTMBZ, Oct 24, 2018.

  1. VTMBZ

    VTMBZ New Member

    Joined:
    Oct 24, 2018
    Location:
    Northern Vermont
    My sugarhouse is unheated but I need to have running water in it during syrup making season in the early spring. I have a shallow (10’) well with a heavy duty submersible pump, capacitor start 220v. But since the building is unheated I dont want to use a pressure tank, as that would freeze in this northern climate. I just throw the disconnect on when I need water.

    THe problem is that the pressure is way too much for practical use. I installed an outside faucet to relieve some of the pressure, but its still way too much water at once. I want to put a ball valve in the supply line from the well and throttle it back to about 20psi. How much can I throttle that pump back before I ruin it?

    In use I would probably never use it more than ten minutes at a time in throttle position: mostly just to flood the floor and for hand washing. Will I overheat the pump?
     
  2. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    The pressure has nothing to do with it. You can throttle that pump back to 1 GPM without hurting it at all. You can use a CSV1A without a pressure tank to control the pressure. Attaching a little 1/2" pressure relief valve to the CSV1A would make it a fool proof and safe system. The CSV would regulate the pressure to 20-30 PSI as needed, (adjustable between 15 and 150 PSI). Then the PRV would dump 1 GPM if someone accidentally closed the hose without turning off the pump. Then you would have 20-30 PSI like you want, no matter how much or how little water you are letting out of the hose.
    csv1a.jpg
     
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  4. VTMBZ

    VTMBZ New Member

    Joined:
    Oct 24, 2018
    Location:
    Northern Vermont
    Thanks f or the helpful reply. I looked up a youtube video and I think I get this: it just closes the supply, right?
    Would this have to be protected from freezing? (It gets pretty frosty here!).
     
  5. VTMBZ

    VTMBZ New Member

    Joined:
    Oct 24, 2018
    Location:
    Northern Vermont
    Doing more research thanks to being pointed in the right direction: what are the specs
    To look for on a prv to get to 1gpm?

    I’m thinking that a prv installed just after the pump and submerged in the well will allow me to install a ball valve under the sink safely without burning up the pump. Remember, I’m using this three weeks a year and only intermittently.
     
  6. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    A regular pressure reducing valve will completely close and burn up your pump. The CSV works like a pressure reducing valve except that it cannot close enough to melt down the pump. The CSV working in combination with a little pressure relief valve will make sure you pump never gets below 1 GPM flow, and the pump will be safe.

    We have a CSV that will fit in the well if that is what you want, model CSV12550-1. But you could just install a CSV1A above ground, as it will not freeze any quicker than the pipe itself.

    Installing a brass bleeder orifice about 5' below the surface will allow the pipe and system to drain automatically. When you turn power off to the pump and open a faucet, the bleeder will drain everything in the system down to 5' below surface automatically.
     
  7. banjo bud

    banjo bud Member

    Joined:
    Sep 24, 2018
    Location:
    South Carolina
    Why don’t you buy a 250 gallon plastic tank, put it in your truck, and fill it up before you leave for the sugar shack? Hose spigot on the tank to feed a sink in the shack.
     
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