Originally Posted by TEBerg

It sounds like you are trying to fit the valve directly into your pump, but it does not fit/work that way.

The Valve and Filler are meant to fit together and each have an air line. One air line goes into the plane air system from the aluminum filler part, the other "brass" fill valve has an air line that goes to your pump.

You need to make some adapter to get from the pump into the air line - I just used a sports/ball fill needle and cut the end off of it. The needle is the right size to hold an air line without needing the barbs. The threaded end of the sports needle goes into your pump.

No pictures here, so I hope that makes sense.