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Thread: In the ball park?

  1. #1
    DIY Junior Member PHONEMAN's Avatar
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    Default In the ball park?


    Im really new at this , so Ive got a 85 gallon tank , its a regular tank no bag inside of it, just a straight

    85 gallon, Pro Sourse tank, 1 hp jet pump. Setting are 30/60 . I get 18 gallons of water before

    pump turns back on, Takes about a minute or so to shut off after it comes on. Im I in the ball park as far as

    amount of water before pump comes back on?

    Ive got a deal that goes into the side of the tank, about 15 or so inches above bottom of tank

    not sure if it lets air in or lets air out or maybe both, it has a copper line that goes to the

    suction side before it gets to the pump.

    Charles

  2. #2
    Moderator valveman's Avatar
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    Default

    With the perfect amount of air in the tank and a 30/60 pressure switch setting, you should be getting about 35 gallons draw down from that size tank. That little copper tube is part of your air maker system. And depending on how much air charge it keeps in the tank, determines how many gallons you get out before the pump starts. 18 is really not too bad.

  3. #3
    DIYer, not in the trades LLigetfa's Avatar
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    Default

    35 gallons is probably overly optimistic.

    http://www.nationaldriller.com/Artic...00f932a8c0____

  4. #4
    Moderator valveman's Avatar
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    Quote Originally Posted by LLigetfa View Post
    35 gallons is probably overly optimistic.

    http://www.nationaldriller.com/Artic...00f932a8c0____
    "Example 5

    This shows how the drawdown changes if we widened the differential between the cut-in and cut-out pressures from 30/50 to 30/60.
    Drawdown = (28 + 14.7) / (30 + 14.7) – (28 + 14.7) / (60 + 14.7) x 85
    Drawdown = 38.4 x 85 = 32.6 gallons."

    Sorry missed it by a little. But I used this... http://cyclestopvalves.com/runtime_app.php

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