What is the difference between a propane tanks and propane cylinders?

Propane storage containers are made in many sizes and shapes for both stationary and mobile use. Both types are designed to hold propane in its liquid form, which means that the container is pressurized. It’s important to know which type you own because there are specific requirements for each. Steel stationary tanks are commonly installed both above- and underground at homes or businesses to supply fuel to all propane-powered appliances in the structure. There are two common types of propane tanks:

• American Society of Mechanical Engineers (ASME) tanks are a common type used to supply fuel to the home. These tanks are typically installed horizontally and range in size from 120 to more than 1,000 gallons.
• Department of Transportation (DOT) cylinders that provide fuel for homes are called stationary or exchange service cylinders. These are installed vertically and tend to be smaller in size than an ASME type. Smaller DOT cylinders commonly used for all types of work and recreational equipment, outdoor living amenities, and forklifts are called portable cylinders. These can be various sizes and made of different materials like steel, aluminum, or composite materials.

Additionally, Disposable cylinders are small cylinders, typically containing one pound of propane that can be used for camping or soldering. These types of cylinders generally are disposable, but some approved cylinders can be refilled.