Check valve in a Kart tank

[pioui1]

How to add a hose from the gas cap,I would like to know where to buy the parts that you drill in the gas cap,

thank you very much

 

[Harbor]

I get mine here
https://cometkartsales.com/Fuel-Tanks-and-Supplies/

 

[hink320]

Canadian tire has them. Product #026-4944-0

 

[pioui1]

thank you very much