Forum Discussion
winniman
Feb 08, 2020Explorer II
My propane tank has a bleeder screw that the propane attendant opens when they fill the tank. It is located about 3/4 of the way up the tank on the front. It is at the 80 percent mark. When the propane reaches the bleeder valve, the propane will start to come out. At this point, the attendant closes the valve, and stops pumping propane. Since they are pumping liquid propane in, the valve allows air to be displaced by the liquid coming in. Im no expert, but I don't think ever tank has this same valve. I don't think my friends rv has one, but mine does. The reason you only fill the tank to 80 percent is that in hot conditions, the propane will expand. The 20 percent is a safety margin to allow for safe expansion.
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