Propane Question: 18 Gal = XX Pounds?
The coaches we're looking at have an 18 gallon propane tank...If I did my arithmetic right that's somewhere about 80 pounds of propane. Am I close?
Forum Discussion
Second Chance wrote:
Google is your friend. Propane (LP) is 4.2 lbs./gallon, so 18 gallons would be 75.6 lbs.
Rob
18 gallons is the tank capacity including the headspace and so it needs to be adjusted down by 20% to get the permissible capacity in pounds of propane (as there must be some allowance for headspace). Your tank (nominally) holds 60 pounds of propane. The actual amount that gets put in might vary slightly based on the ambient temperature, how level you are when it's being filled, and other such variables.
A DOT cylinder, such as the 20 pound cylinders used for grills and so forth, is sized in the nominal working capacity in pounds of propane and so already has the headspace accounted for. A 20 pound cylinder has an internal volume of about six gallons in total, and holds (nominally) 20 pounds of propane when filled.
