underground propane tanks

underground propane tank


Underground Tanks​​

If you don’t like the visual appeal of propane tanks, then consider an underground tank. We offer propane tanks in 250, 500 and 1000-gallon volumes. Underground tanks are more temperature controlled because they are exposed to less extreme temperatures. Also, underground tanks can increase the value of your home. However, these tanks cost more to install.

Underground propane tanks help retain your curb appeal. Once buried, only the lid is seen protruding from the ground. The lid keeps the regulator, gauges, and filling port from exposure to the elements. We offer different propane tank sizes to meet a wide range of residential and commercial needs. When filled, the volume of propane is approximately 80% of the total tank capacity to allow for expansion.

These large propane tanks are typically used for whole-home systems, home heating, generators, pool heat, commercial cooking, drying cleaning, and crop drying. The tank is about 6′ 3/16″  tall and 15′ 11″ long. It is appropriate for most buildings ranging from 4500 sq. ft. and up. Metered systems for small communities and shared commercial buildings commonly install 1000-gallon propane tanks as their central propane storage.

Underground propane Tanks​​

co 29438 body tanksug

This underground propane tank requires you to dig a hole in the yard on your property. Excavating the yard will cause damage and leave a large patch of dirt. However, you can plant grass and sod, and you’ll eventually be able to plant and landscape this space. In fact, the yard can end up looking even better than before and help raise the value of your property!

Above-ground propane tanks can be an eyesore and can require more creative landscaping to hide. Underground propane tanks are also surrounded by earth so they’re not as affected by weather conditions and freezing temperatures as above-ground tanks.

1000 Gallon Underground Propane Tank


  • Conforms to the latest edition of ASME Rules for Construction of Pressure Vessels, Section VIII, Division 1. Complies with NFPA 58.
  • Rated at 250 psig from -20° F to 125° F. All vessels are registered with National Board. Some standard vessels are available with CRN (Canadian Registration Number).
  • Heavy-duty steel is painted with a mastic application to ensure long life and remain anti-corrosive
  • Vessels shipped with durable ready-to-bury coating. Vessels, depending on manufacturing location, are either powder coated with phenolic epoxy, painted with a single application urethane coating, or primed with liquid epoxy and coated with liquid epoxy top coat – all providing a durable ready-to-bury coating.
  • All vessels are shipped vacuum pre-purged to enable a simplified first fill of the vessel.
  • The green composite dome provides a large working space and is resistant to the elements. Anode stud attached to riser pipe to enable ease of cathodic connection.


  • Water Capacity: 1000 Gallons
  • Outside Diameter: 41″
  • Head Type: Hemi
  • Overall Length: 15′ 11″
  • Riser Height: 6′ 3/16″
  • Leg Width: 16 1/4″
  • Leg Spacing: 9′ 0″
  • Weight Empty: 1812 lbs.


• Designed and constructed in accordance with theASME Section VIII, Division 1 Code• Registered with the National Board ofBoiler & Pressure Vessels Inspectors• Complies with NFPA 58• Conforms to specifications set forth by theRailroad Commission of Texas


• Epoxy powder paint for maximum rust protection• Tanks painted gray• Ready to bury durable epoxy powder coating†Shroud Features (500 & 1,000 gallons)• Durable construction• Large opening for easy filling and maintenance• Recessed markers to indicate proper burial depth• Permanent hole for mounting location flag• Access on sides for flexible riser connection• New shroud available for 500 gallon and1,000 gallon UG tanks, shroud dimensions:* Shroud for long riser 32 3/16” X 26 5/16”* Shroud for short riser 19 3/8” X 26 5/16”


• Tanks fully fitted with RegO valves andRochester liquid level gauges• Container pressure rated at 250 PSI @ 400°F• Vacuum purged• Duplicate data plate is zip tied on the riser pipebelow is the anode bolt connection for convenience• Product is offered with 14” short or 28” tall risers• Anode bolt connection located under the dome• Short or tall plastic shroud assemblies (w/lid)supplied accordingly• #54 liquid level outage valve orifice

PROCESS CONTROLAll welded products are x-rayed and pressure tested@ 325 PSI per ASME Sec VIII, Div 1 requirements,followed by rigorous leak test inspections, bothpre and post valvingSTORAGE & DISTRIBUTIONContact Propane Education & Research Council foradditional resources and information at Inter-modal containers Ltd.

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