filling propane tank

[5hfarms]

When filling propane tank on my class C, should the valve to the motorhome be turned off before filling the tank. I am quite often on this website enjoying all the knowledge to be had here. Thanking you in advance.

[backdoctor]

Yes. In fact the attendant who fills the tank will do that. Like filling up an automobile with gas, the rules require you to turn off the engine and close the valve to the tank.

[ResQfrog]

Yes, shut the supply valve off. Also shut the vehicle engine off. They are pumping the liquid propane in to the tank. The valve and regulator are made to use the propane as a vapor, and not as a liquid.