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Stop Gas Overflow And Spill At The Pump - Fits 2" Hose

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Part # 635002
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stop fuel from coming spitting wellback well back at the pump


Perko Brand Inlet Check Valves (ICVs) are used to help prevent wellback (the reverse flow of fuel out the fill after refueling is completed) and spit back. 
These normally closed valves are opened by the presence of fuel running down the fill pipe during refueling.
These valves are designed for use with plastic or metal tanks. 
The In-Pipe IVC fits inside the fuel hose itself. 

To See An Article Explaining More About This Product, And Other Options: See Our Blog (Click Here)

• Mounts inside 2" fill hoses near the connection to the fuel tank 
• Eliminates need to re-tool existing doghouse on plastic tanks 
• Replaces in-line ICVs eliminating 4 hose clamps and 2 leak points 
• Allows for full 18 gpm flow rates.

Length 1-1/4" 
Main Tube Outer Diameter 2"
Flow Rate 18 gpm
Condition New
1.5" Version Of This Part (CLICK HERE)


If you want to adapt this to a smaller diameter system; You can slide this valve into a 5" inch long section of 2" hose and insert male " Stepped Reducers" In each end,  And Then clamp them in. You will need about a 6" long area to splice in this assembly into place -(not including ends inside of hose)You can find some of these items in the RELATED ITEMS AREA AT THE BOTTOM OF THIS PAGE.


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  • 5
    Excellent product

    Posted by Sebastien bernier on Sep 4th 2019

    I recomend this product

  • 5
    Perfect solution for fuel spillage

    Posted by Jon zoran on Aug 25th 2018

    I installed this on my 70 chevelle, i had to modify the neck but not gas does not puke out of the cap when i take off