How are Propane Tanks Filled?
Fill Valve The first and most important thing to do when filling a propane container is to examine the fill valve located on the container. The fill valve is built in such a way that liquid propane may only flow into the valve, but not flow back out of it. This prevents any sort of backwashing during the filling process. The larger tank from which propane is being transferred should have a hose leading out of it, and on the end of the hose there should be a coupling that will connect to the fill valve. Check the coupling at the end of the hose to be sure that the necessary black rubber gasket is present. This gasket creates a firm connection and ensures a safe propane transfer. Connection The end of the hose is next connected to the portable propane container. The two ends screw together and should be closely examined. When the operator is certain that the coupling is secure, creating one long hose from the larger tank to the smaller, he opens up a second valve where the hose connects
