avoid refilling as often. Some newer tanks, like Bernzomatic, will have a sticker on them saying they don't need to be purged within 6 months of the manufacture date. Offer of the week clipped, unclip, share, share with your friends. Reasonable care and a cover will easily give your Weber grill 10-20 years of life. As always, you pay a premium for convenience.
That retailers fill tanks well below the limits of the tank's design, and call it legal, would seem to be the most likely case. More See more offers in Personal Care. Purging requires a special adapter to allow a small amount of propane. Brand new propane tanks may come with air inside and need to be "purged" before the first fill. Since at least the late 1990's there have been floats in the tanks. You can push that piece in manually, but it mainly prevents situations like a kid opening a spare, unconnected tank and having it bleed gas into the surroundings. You may get a pound or 2 less, depending on the temperature of the tank and surrounding air when the tank was filled. B) Said person has a vested interest in people believing otherwise. This would be less of an issue if the relief value were bleeding to outside air. There should be 20 pounds going in for full capacity. The pressure then pushes air out of a one-way bleeder valve.