Running a pump, direct without a controller?

Discussion in 'Water Fed Pole Cleaning' started by Jon Grainger, Jan 13, 2016.

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  1. Jon Grainger

    Jon Grainger Member
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    Hi guys,
    Is it possible to run a pump, (130psi, 6ltrs per min) without a flow controller, just connected directly on the positive and negative, of my Leoch LP12-20 battery?

    Here is my battery as it has the specs written on the front-
    [​IMG]

    I want to pump at full power for about an hour, with a break for the pump to cool. Is this possible with this setup do you think?

    Regards
    J
     
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  2. jimmyboots

    jimmyboots Forum Addict
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    The short answer is Yes mate. If that's what you want to do. If the pump is a 12 volt pump.
     
  3. Taxlossloz

    Taxlossloz Grand Master
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    I think The pump will be happier running full blast as they are under strain when flow lowered
     
  4. steve garwood

    steve garwood ginger lion
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    Mmmm, not sure that's correct mate. Imagine an engine at full revs and another ticking over. The 2nd will last longer as its not working as hard
     
  5. Posh

    Posh Hero
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    Put a tap on your hose & control the flow with that. That's all I do
     
  6. Bluebird/Jimbo

    Bluebird/Jimbo Newcomer
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    Same here. Pump straight to a 12v battery and control on/off with tap on microbore
     
  7. Chris Dall

    Chris Dall Active Member
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    Im always 100psi all times, none of this flow control naff!
     
  8. ♠Winp®oClean♠

    ♠Winp®oClean♠ Forum Addict
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    That's incorrect mate, in fact the opposite is true- the pump is under much less strain with a controller. An uncontrolled pump will drain the battery much faster also.
     
  9. spruce

    spruce Grand Master
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    I also think he will kill the battery as well probably within minutes. There is a difference between voltage and amps. If you compare it to water in a hose, voltage is the water pressure (12v) and current is the flow of water in the hose (amps). A Shurflo 5.2lpm pump 12vdc can use as much as 7 amps running flat out under load. That battery isn't rated to produce that power output.

    In theory, if the battery could produce 7 amps continually, then the battery would be flat in less than 3 hours.
     
  10. Jason Etheridge

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    When I first started out I used a pump directly without a flow controller.
    I does work but you burn so much water... Add a flow controller, you can get them off eBay for about £5.

    Worth the money, plus you don't blast the Windows and get extra poop from window vents.

    Ta.
    Jase.
     
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