Description
ASME #420 Steel Cylinder: 120 Gallon
The #420 designation refers to the 420 lb propane capacity, which is why these cylinders are commonly listed as 120-gallon tanks. Both numbers describe the same vessel.
What it suits
This is an above-ground cylinder for modest, defined loads: gas fire logs, a range or cooktop, a dryer, or a similar single-appliance supply. It is the size most often chosen where a full bulk tank would be excessive.
Manifolding for larger loads
Cylinders of this size can be connected together and run as one supply. Two or three manifolded #420 cylinders will carry whole-house heating for a smaller property, and the arrangement can be extended later without replacing the vessels. That is useful where access will not accommodate a single large tank.
Installation
Siting and setback distances are governed by NFPA 58 and by your state and local authority, and connection must be carried out by a licensed propane professional.
We deliver the cylinder. We do not install it, fill it, connect it, or arrange permits.
Not sure which capacity fits? Compare dimensions and usable propane in our propane tank sizes guide.
