The Worthington 26.2" Diameter CNG Cylinder is the company's largest Type III CNG cylinder and provides fast-fill efficiency. The inner aluminum liner dissipates heat during fast-filling, allowing for an additional 15 to 25 percent more fuel storage compared to Type IV cylinders of similar size. Ideal for Class 8 heavy-duty and refuse trucks, these large diameter cylinders will fill to rated capacity making longer routes possible. The cylinder features gas-tight construction thanks to its inner aluminum liner, which prevents permeation. There are also no filling restrictions in hot or cold weather. According to the company, the aluminum liner provides better heat tolerance in the event of a fire, and transfers heat to the pressure relief device.