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How to stop syphoning

  • 27-05-2012 9:07am
    #1
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭


    Hi folks.
    Someone might be able to help with this query.
    I have a home made herbicide applicator. It runs of a 12v connection on the tractor. My problem is that when the pump is turned off it syphons more product out continuously and wastes allot. I have been looking at a 12v solenoid valve which would stop the line (1/2 inch), it could be wired in parallel to the pump and operate on the same signal.
    Is there anything else simpler I can do as I'd rather not spend another €50 on a valve.
    Any suggestions welcome.


Comments

  • #2
    Joey the lips
    Registered Users, Registered Users 2 Posts: 10,262 ✭✭✭✭Joey the lips


    Yeah. Just connect a tee peice in line just after the pump on the product side. Then add a little bit of hose and a valve. When the product is being siophoned by you make sure the valve is closed. Afterwards make sure its open to stop the vacuum effect.


  • #3
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭bbam


    Joey the lips wrote: »
    Yeah. Just connect a tee peice in line just after the pump on the product side. Then add a little bit of hose and a valve. When the product is being siophoned by you make sure the valve is closed. Afterwards make sure its open to stop the vacuum effect.

    Yea I appreciate that would work but I only have a 12v connection into the tractor.. I would need to pump for 20-30 seconds every few minutes so it would be impractical to be up and down, starting and stopping..

    What I was wondering about was a tee and one of the automatic air bleed valves for a heating system.. I thought it would close then the pump came on and then when the system was syphoning would it open and stop more liquid being syphoned on ??

    85596.jpg


  • #4
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    Why not just install a simple anti-syphon valve? It will only allow liquid to pass through it under pressure, i.e. whilst the pump is on.


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