fuel tank venting w/perry regulated pump

[Verne Koester]

Ken,
That's exactly what you need. One fuel dot for filling, one for overflow. The overflow dot runs to a tee. At the tee, one line goes to the vent line in the tank, the other line goes to the check valve. The check valve lets air in but won't let fuel out. When filling, the check valve acts like a plug. The fuel dot is used to uncap the line to give the overflow somewhere to go.

Verne


  ----- Original Message ----- 
  From: Ken Thompson III 
  To: discussion at nsrca.org 
  Sent: Monday, February 28, 2005 6:21 PM
  Subject: Re: fuel tank venting w/perry regulated pump


  Verne,

  The only problem with your setup, in my plane, I can't see my tank, its not on the CG, so without the open line to atmosphere, the overflow of a full tank can't go past the check valve, letting me know the tank is full.  I can fix that with double dots, one for overflow and one for fill.

  Ken
    ----- Original Message ----- 
    From: Verne Koester 
    To: discussion at nsrca.org 
    Sent: Monday, February 28, 2005 5:02 PM
    Subject: Re: fuel tank venting w/perry regulated pump


    Ken,
    You've no doubt read some of the threads describing a tee in the line where one end goes to the tank vent, one end goes to the check valve, and one end goes to a fuel dot. That's what I'm doing. To fuel, you pull out the fuel dot which lets the tank vent act as a fuel overflow. when it's filled up, you put the dot back in. Pretty simple setup that works well as long as the check valve's pointing the right way.

    Verne
      ----- Original Message ----- 
      From: Ken Thompson III 
      To: discussion at nsrca.org 
      Sent: Monday, February 28, 2005 5:56 AM
      Subject: Re: fuel tank venting w/perry regulated pump


      Verne,

      That settles it, I'm picking up check valves this week.  I wish this thread would have been posted last year, I could have saved a lot of Windex.

      Ken
        ----- Original Message ----- 
        From: Verne Koester 
        To: discussion at nsrca.org 
        Sent: Monday, February 28, 2005 12:11 AM
        Subject: Re: fuel tank venting w/perry regulated pump


        Ken,
        The Smaragds you've seen me with the last two seasons both have a YS check valve on the vent line. The sole purpose is to prevent a mess if the vent line siphons. Never had any problems.

        Verne
          ----- Original Message ----- 
          From: Ken Thompson III 
          To: discussion at nsrca.org 
          Sent: Sunday, February 27, 2005 8:46 PM
          Subject: Re: fuel tank venting w/perry regulated pump


          Nat,
          With you and Bob P. using the check valve, I'm thinking that is the way I should be doing mine.  
          It's an easy addition.
          Ken
            ----- Original Message ----- 
            From: Nat Penton 
            To: discussion at nsrca.org 
            Sent: Sunday, February 27, 2005 8:43 PM
            Subject: Re: fuel tank venting w/perry regulated pump


            Ron I put a one way valve in the line, with a T in it,. Plug the T when thru fueling.         Nat
              ----- Original Message ----- 
              From: ron donato 
              To: discussion at nsrca.org 
              Sent: Sunday, February 27, 2005 6:47 PM
              Subject: fuel tank venting w/perry regulated pump


              i just installed a perry pump and the instructions say not to use muffler pressure to the tank. my question is, how do i vent the tank properly so i don't create a siphon from the vent line?


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