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A 100 pound propane tank has a capacity of 2,160,509 BTUs
The Letters "WC" on a propane tank stand for "Water Capacity", and are followed by a number which would identify the tanks Water Capacity typically measured in lbs. Water weighs approximately 8.3lbs per gallon Propane weighs approximately 4.24lbs per gallon
100 pound propane tank will hold 23.58 gallon. 100 pounds / 4.24 pounds per gallon = 23.58 gallons
20 LBS OF PROPANE WILL PRODUCE APPROX. 36,000 BTU @ 0 DEGRESS, 51,000 @ 20 DEGREES.
69
roughly 9.7
. . . . 30 pounds
Might be because lb is an abbreviation for pound?
69
DT stands for Dip Tube and the number is the length from the OPD valve. Source www.protanksupply.com
a typical steel "30 pound" liquid propane tank weighs about 25-28 pounds empty.propane tank markings (on collar)propane weighs about 4.125 pounds per gallon and a "30 pound tank" willhold about 7.5 gallons so a full tank will weigh about 55 pounds or so./source: wiki.answers.com/
19.04761904761905 ( measured @ 4.2 lbs per gallon )