If you have both tank valves open, it is supposed to switch to the other tank automatically. For some reason mine will not do that. I like to leave one valve closed anyway. That way I know for sure that one is empty and one is full instead of discovering both are empty in the middle of the night.
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2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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