Blitz still sells Blue versions of their can with the old, non-triggered nozzle. They're stenciled as water jugs. Just paint "GAS" on them with red paint and go on down the road.
The one good thing about the non-vented cans---the old non-triggered versions, there's absolutely NOTHING good about the triggered ones---is that they stop flowing when the tip of the nozzle is submersed in gas.
Thus, for you that use MoGas and fuel the plane with 5 gallon cans, you can do it while you're preflighting the plane and not worry about the tank overflowing when it gets full.
Note: This works on MY C182A. I won't guarantee that it works on any other plane anywhere.
On the old non-triggered tanks, I simply drilled a hole in the top/back that a golf tee would force fit into & plug. I take the tee out when I don't need the self stopping feature. Leave it in when I do.