Overview of LPG Tank

From Johnny Bridges:

• A is the sending unit for the level gauge


• B would be an overfill prevention valve. You crack it open when filling and when liquid propane starts to spurt out of it then the tank is at the 80% level. At that point you stop filling and close that little valve. This allows expansion room in the tank if the temperature warms up. That is exactly what an overflow prevention valve does in a modern tank except it does it automatically. (Emery Stora) - It is called a fill level indicator (Update from Matt Colie) - fill til liquid comes out of this.


• C is the pressure regulator


• D is the hose which feeds the stove, icebox, and furnace


• E Is probably teed off of D underneath to feed the icebox or whatever is on that side of the coach


• F is the fill port.

More notes from Emery Storage:

The tank does not need to re-certified every x-years as it is an ASME and not a DOT tank. ASME tanks are certified for life.

A gallon of LPG weights around 4.2lbs. Most people have a 68pound tank (like above). After 80% filling, the LPG exits out of the overfill fitting. That allows for temperature rises not to cause issues with the tank.