That depends on how large the cylinder is.
How many gallons are in a 54" x 10' cylinder?
7.9 gallons in a 33# forklift cylinder
Gallons of what?
6.5 gallons.
Depends how big cylinder is
317.25 gallons.
This cylinder can hold up to 66.1 gallons of water.
This cylinder will hold up to 19.65 gallons of water.
A 2' by 15' cylinder will hold up to 352.51 gallons.
1880 gallons
A 3.5' by 4' cylinder will hold up to 287.88 gallons of water.
A 1,055 cubic foot cylinder can hold up to 7,890 US gallons or 6,570 Imperial gallons of liquid.