Thank you for the tips. I always watch when propane gets put in the tank and he used the open/closed switch. A couple of years ago person at a gas station tried to fill tank and didn't close that switch and it just comes back at you. I watched him reach in to the side of the tank and turn a valve, did not have a good angle however, there is really only one that I would consider.
Wally & Elta Mae
2007 Allure 470 Sunset Bay #31535