Re: PVC Fuel Tank
Those things are called petcocks or fuel valves. A small ball valve from a home improvement store will work just fine.
The actual hose attaches to a hose barb.
You will need to thread the hose barb onto the valve yourself. Use yellow thread tape to seal the threads. A PVC threaded end cap with a super teeny tiny vent hole drilled through it will work fine as a gas cap.
Build it all for less than $15, I highly doubt it.
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.
Does not come with a fortune cookie."