I have never turned mine off to travel. I turn the tanks on at the beginning of season and off at the end. Only time I've turned them off in route was going through a tunnel that required me to. I've had issue turning them on slowly enough to not activate the flow control valve. (Not sure that's the correct name) All RV's have them so if you do have a leak or a catastrophic failure in a line it will shut off flow to the lines. I always thought the more you mess with something the more problematic they will become.
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