Description
Designed for residential and commercial energy demands, this 500-gallon underground propane tank provides a reliable, hidden fuel storage solution. Ideal for whole-home heating, central water heaters, generators, and pool heaters, this unit delivers high capacity without disrupting your landscape design.
Durable Underground Construction
Built from high-quality steel and ASME certified, this below-ground vessel features a specialized Valspar “Q-thane” protective coating. Engineered specifically for direct burial, the durable coating delivers outstanding corrosion resistance and structural integrity across decades of subterranean exposure.
Capacity & Performance
With a 500-gallon water capacity, this tank comfortably holds up to 400 gallons of propane when filled to the standard 80% maximum safe level. It serves as an optimal solution for homes ranging from 2,500 to 4,500 square feet, as well as agricultural and light commercial applications such as cooking, crop drying, and auxiliary heating.
Key Specifications & Safety Notes
- Certification: ASME certified stationary underground storage tank.
- Pressure Rating: Class 150 rating.
- Initial Fill Requirement: Shipped under factory vacuum seal; the initial filling process requires a licensed local propane provider to break the suction seal via the POL valve using methanol prior to regular filling through the ACME fill valve.
- System Requirement: A pressure regulator is required to reduce internal tank pressure to standard appliance operating levels.
| Product Type | Underground Propane Tank |
| Water Capacity | 500 Gallons |
| Propane Capacity (80% Fill) | 400 Gallons |
| Material | Steel |
| Coating | Valspar Q-thane |
| Certification | ASME |
| Pressure Class | Class 150 |
| Head Type | Hemi |
| Outside Diameter | 37.5″ |
| Overall Length | 9′ 10″ |
| Riser Height | 5′ 9 3/8″ |
| Leg Width | 15″ |
| Leg Spacing | 5′ 0″ |
| Weight Empty | 953 lbs. |











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