MANCHESTER TANK, an affiliate of McWane, Inc., is the premier manufacturer of pressure vessels for the containment of propane ... , compressed air, and chemicals in the United States, Canada, and Australia. The company's broad product line includes Department of Transportation (DOT) approved steel and aluminum cylinders ranging in size from 5 to 420 pounds and American Society of Mechanical Engineers (ASME) approved steel tanks ranging in size from 1 to 30,000 gallons. read more