It is unsafe to overfill a tank, and they say typically not to fill a grill tank over 80%, but the OPD will usually kick in before 80% in any case. As I detailed above, in regards to your OPD, you can typically only get 4-4.2 gallons in a typical grill tank. (4 is the gallons of propane in your tank). by 4.25 (which is the weight of 1 gallon of propane), and you get 4. For instance, if your scale reads 33.6 Lb., you subtract 16.6 (different tanks have different tare weight, and I am using the 16.6 weight pictured in the website) from 33.6, and you get 17 Lb. When refilling a propane tank, you are right, basically, when you take the tare weight, and subtract that from the total weight of the tank with the contents (propane), and you get the weight or amount of propane in a tank. I have seen a tank leak, due to rust, it is is a SERIOUS THREAT TO LIFE. If a tank is overfilled, and has rust at seems, it can fail. ONE MUST NEVER use a grill tank without and OPD, by law, which is the type of tank, when the valve is opened, propane comes right out, and there is no float, to cut propane, so the tank is not overfilled. Temperature plays a role, because when the temperature rises, the gas expands, and this will effect the propane. Also, legal propane tanks will have an OPD, which is an Overfill Protection Device, which acts like a float, and will close the valve when it reaches 4.0-4.2 gallons of propane, which is 17.0 – 17.85 Lb. I am a professional in the industry, and I get a lot of people telling me that a propane tank should be filled with 20 Lb. “Nearly everyone has the typical 20-pound (5-gallon) barbeque grill propane tank, and many preppers have stocked up with extra tanks for various reasons – but how do you accurately know how empty or full your tank really is?”Ī typical, residential 20 propane tank does not hold 5 gallons of propane. I want to clarify some of your facts, regarding your first paragraph, which is very important, regarding the information you are giving the public: Here’s the most accurate way to find out how much propane is in your tank:įirst, you might use this multipurpose luggage scale: Hanging Weight – Tare Weight (“TW” printed on tank collar) = pounds of propane inside As explained above, there’s a little math involved, but it’s no big deal. (amzn) Weigh The Propane Tank Yourself And Do The Math.Īlternatively you could weigh your own propane tank with an ordinary hanging scale or by setting it on a floor scale. Maybe you have a 30 pound RV tank too (for example). Might be useful if you have more than just a typical 20 pound propane tank. There’s simply a button on the top to select your tank size. It’s a propane tank digital scale for 5LB, 10LB, 20LB, 30LB, or 40LB tanks. The following is a new Propane Scale product since my original post which I will include in this update. Instead we’re just looking for a reasonable approximation of how full or how empty. Use a weight gauge that’s specifically calibrated for the typical 20 pound BBQ-size propane tank. Here’s a quick and easy way to know how full your propane tank really is. Other people may have different experiences with how much they get at a propane refill station. Their standard operating procedure is 3.8 gallons to ‘fill’ it. So I get them filled at my local hardware store. I own all of my own tanks (rather than the trade-ins). So at most, you’re going to get about 4 gallons of propane in a full tank. It acts like a float, and will close the valve when it reaches 4.0 – 4.2 gallons. Standard ‘BBQ’ 20 pound propane tanks have a built-in Overfill Protection Device valve. Therefore there’s a safety margin which limits a tank to only fill 80% full. Do they ever really fill a 20 pound propane tank all the way? So 17 + 16.8 = 33.8 pounds when full (again, depends on your tank Tare Weight so check the collar stamp). How much does a (safely) FULL 20-pound propane tank weigh?Īnswer: A standard 20 pound propane tank when safely full (80% full), weighs the stamped “TW” (Tare Weight) plus 16.8 (the weight of 4 gallons of propane. Two of them are stamped 18 pounds, the other two are stamped 16.6 pounds ( about 17 pounds average empty weight). But, how do you know how empty or full your propane tank really is? How much does an EMPTY propane tank weigh?Īnswer: An empty propane tank will weigh the “TW” (Tare Weight) value listed on the tank’s collar. Nearly everyone has the typical 20-pound (5-gallon) barbecue grill propane tank.
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