RE: Searching for "Dynamco Magnetic Valves"
When I lived in Europe I usually had to go thru special US channels to get products from US manufacturers. Otherwise if I tried to order with my European address I would get referred to some European affiliate.
In order for you to get the US price you would have to get an American to buy the product and ship it to you. This makes the American liable if something should happen caused by the item.
The valve you want is to be used in a hot air balloon. That makes it a life and death situation.
It may sound ridicules to you but thats the way life has become in the US. You can't do anything without considering the legal ramifications.