What is a Propane Tank? • Propane tanks are the storage containers for propane in its liquid form and are available in many different sizes being engineered and designed for propane containment at high pressures. SIZES • 1000 Gallon Propane Tank Dimensions: 16' 2" long and 41" in diameter Uses: Home heating for larger square footage homes or homes with all appliances running on propane. A 1000 gallon propane tank holds 800 gallons when full. • 500 Gallon Propane Tank Dimensions: 9' 11" long and 37.5" in diameter Uses: Primarily used for home heating or homes with 2-3 propane appliances such as supplemental or space heaters, hot water heaters, and generators. A 500 gallon propane tank holds 400 gallons of propane when full. • 250 Gallon Propane Tank Dimensions: 7'10" long and 30" in diameter. Uses: Supplemental heating or 2 home appliances including water heaters, generators, and pool heaters. A 250 gallon propane tank holds 200 gallons of propane when full. • 120 Gallon Propane Tank Dimensions: 4'6" in height and 30" in diameter Uses: 1-2 residential appliances. Commonly used for a hot water heater or space heater alone, or with another small appliance like a dryer or cooktop. A 120 gallon propane tank is also commonly referred to as 420 lb propane tank. 120 gallon propane tanks hold 96 gallons of propane when full. • 20 lb Propane Tank Dimensions: 1' 6" in height and 1' in diameter. Uses: Propane grills, generators, patio heaters, and other outdoor equipment. To purchase or exchange a 20 lb tank, find a location near you. 20 pound propane tanks are often referred to as grill cylinders and hold 4.6 gallons of propane when full. NOTES: EVERY TANK CAN HOLD UP TO 80% OF PROPANE. AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) ABOVEGROUND TANK ASME Aboveground Tank Features • Liquid Withdrawal Valve • Liquid Withdrawal Dip Tube • Pressure Relief Valve • Fixed Liquid Level Gauge Dip Tube • Pressure Relief Valve Springs • Float Gauge Assembly • Liquid Withdrawal Belly Valve ASME Aboveground Tank Features (DOME) • FLOAT GAUGE • FILLER VALVE • SERVICE VALVE • FIXED MAXIMUM LIQUID LEVEL GAUGE • SERVICE VALVE • FIXED MAXIMUM LIQUID LEVEL GAUGE • VAPOR EQUALIZING VALVE • VAPOR EQUALIZING VALVE NOTES: Typical gauges on an aboveground tank. Pressure relief and liquid withdrawal valves not shown. TANK GAUGES • Shut off valve • Tank Gauge UNDERGROUND TANK NOTES: underground tank color doesn't matter because it doesn't see at all.