[Richard]

I am guessing a few of our new owners are following this thread, so I am going to violate my “teach them to fish” rule and point you to exact parts you should have on the coach at all times.

https://www.mcmaster.com/push-to-connect...-fittings/

Go to this page and scroll down to the low temperature push on fittings made of brass. Look at the double ended female connectors. Get a couple of those in 1/4, 3/8, and 1/2 tubing sizes. Scroll on down to the very bottom to the plastic plugs. Again get 2 of those in the three sizes.

The double ended push on fitting can be used in an emergency situation to repair a hole in an airline. Snip out the hole, push both ends onto the fitting, and you are back in business. Repair it properly with a compression fitting in a safe place instead of on the side of the road.

   

Likewise, the plastic plugs turn the double ended fitting into a way of quickly capping an airline. Our driver seats are notorious for developing air leaks. I bet I have seen half a dozen of those airlines to the seat disconnected and bent double or triple secured with vise grips or zip ties to stop the leak. A connector with a plug would fix that in seconds until it could be properly addressed.