There are two kinds of vessels in which to store propane: DOT cylinders and ASME tanks. The best option for any given scenario will depend on a variety of factors, including your portability needs and anticipated fuel usage. Here, the knowledgeable team at Servco Oil & Propane in Wilton, CT, explains the major differences between the two. 

DOT Cylinders

DOT cylinders are those that meet the Department of Transportation’s specifications. These vessels are smaller than ASME tanks and are designed with portability in mind. For example, you might use a DOT cylinder to power your grill. Much larger DOT vessels might stay in one place because of their size, but they can still technically be relocated even when full. Because transporting propane poses certain risks, though, those who do so must follow specific regulations set forth by the DOT. They must also maintain their tanks, which means arranging for recertification 12 years after the original manufacture date and then every five years for the life of the vessel.

ASME Tanks

ASME tanks get their name from the American Society of Engineers. These vessels are designed for permanent installation on a property. Because they have thicker steel and are not exposed to the same hazards that mobile DOT cylinders are, recertification is not required. ASME tanks are measured in gallons. Common tank sizes range from 120 gallons to 2,000 gallons. The capacity of DOT cylinders, on the other hand, is measured in pounds of water. They might range in size from 5 pounds to 420 pounds. 

If you need fuel for your ASME tank, turn to Servco Oil & Propane. This propane and heating oil supplier delivers to clients throughout Fairfield County. As a full-service HVAC contractor, they also offer installation, repairs, and maintenance to ensure your family stays comfortable all year long. Visit their website to learn more about scheduling propane delivery, or call (203) 762-7994 to discuss your needs before winter hits.