True story, not many years ago, I bought several five gallon gas cans to take advantage of my 30 gallon fill limit from those grocery store shopping discounts.
The American version of the nozzle is pictured below. It is a Rube Goldberg style contraption called an "Ëco Spout" which is designed to shut-off if you overfill. It works fine for a few uses and then starts leaking gasoline like a sieve.
I called the manufacturer to complain and, Canadians, being very nice people, sent me a new set at no charge. Everything goes fine for the next few uses, then same problem and I call them again.
The customer service lady then tells me that the sell a simple Canadian version which works on the basic principle of gravity flow without the Rube Goldberg style automatic shut-off. Great, I said, it is a stupid feature anyway because I don't use the can unless I know there is ample capacity in the tank. She tells me that unfortunately, they are not allowed to sell it or even ship it to the United States.
Do I have an opportunity to ever come to Canada to shop at Home Depot, Canadian Tire or any other of their retail distributors? I thank her for the idea, then start checking on-line. Long story short: I find somebody in Point Roberts who sells them for a very reasonable mark-up plus shipping.
American version nozzle.
Canadian version nozzle source.