How much propane is left in my tank?
Most Inline propane gauges on the market are made for large BBQ tanks and are not very accurate when dealing with smaller-volume tanks such as our Gas Growler.
The most accurate way to find out how much propane you have left in your Gas Growler or other small tank is to weigh your tank. Most propane tanks come with two numbers stamped on the handle – the water capacity (“WC” - how much water the tank could hold) and “Tare Weight” (TW – the weight of the tank when it’s empty).
To measure how many pounds of propane are left in your tank, simply weigh it on a scale (a fish or luggage scale is a great portable solution) and subtract the TW number (ours should be 8.8 or 8.6 lbs).
1 gallon of propane weighs about 4.2 lbs., so to determine how many gallons are left in the tank, divide the result of the above calculation by 4.2.
(tank weight - TW) ÷ 4.2 = Gallons of propane left in tank.
Our "5 lb." tank holds about 1.2 gal. when full.
Finally, when the time comes to refill your tank, remember that propane tanks can be overfilled, and will not function optimally. Attendants at many filling stations are accustomed to filling much larger tanks, and may not have as much experience filling small tanks like the Gas Growler. To avoid overfilling, we recommend telling your propane attendant to put 1.1 - 1.3 gallons in, as opposed to filling until their overfill shutoff activates. With a small tank, there isn't as much wiggle room and a couple tenths of a gallon go a long way!