Forum Discussion
ECones
Nov 14, 2014Explorer
coolmom42 wrote:
Sometimes old hoses will be fine as long as they are not moved from a relatively fixed position. But when you move them and flex them in different directions than previously, the previously invisible cracks go on through the material.
Propane cylinders are designed to hold their designated weight at 80% of their absolutely maximum volume. Your 21 lb measurement is probably due to rounding off of the tank empty and full weights; if the weights were at something like 2 or more decimal places, you would probably have exactly 20 lb.
Propane tanks/cylinders are manufactured to pretty tight DOT specs, and they won't vary much coming off the assembly line.
I weighed the empty tanks by weighing myself with and without the tanks and subtracting. The scale is a digital bathroom scale rounded to a full pound. Then, of course, I did the same thing with the full tanks. You're exactly right that after all that subtracting with rounded weights, that 21 pound tank could easily have been 20.
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