Originally Posted by homerbw
2000 Pace Arrow Vision with built in propane tank. I recently installed the extend a stay to make sure we do not go without propane during the winter. We had a lack of propane service last winter causing problems. I would like to know if opening the valve on both propane bottles would cause problems such as to high of pressure. Hope to hear from some of you in the know.
Opening the valves on both tanks will not cause a problem with high pressure. However, if both valves are open, both tanks will run out of propane at the same time - not good, especially if it's in the middle of a cold night.
As She and I suggested, leave the main valve closed and run the RV off the 20# tank that is easy to refill. Only open the main tank valve when the 20# tank is empty and you need to disconnect it to take it to be refilled.