500 Gallon Underground Propane Tank – ASME Propane Tank NEW

This 500 gallon underground propane tank – ASME certified new provides safe, code-compliant buried storage for residential or commercial propane systems. For example, you can use this tank for central heating, hot water, cooking, or backup generators while keeping the tank hidden below ground . Therefore, this underground solution preserves your property’s aesthetics while ensuring reliable propane supply.

Why Choose an Underground Propane Tank?

Above-ground tanks remain visible and occupy valuable yard space. In contrast, this underground tank sits completely below grade with only a small dome lid visible above ground, preserving your landscape . Consequently, you gain discreet propane storage without sacrificing yard aesthetics. Moreover, underground installation protects the tank from vehicle impact, fire, and extreme temperature fluctuations, which helps maintain stable pressure . Thus, you gain both visual appeal and enhanced safety.

500 Gallon Capacity – Perfect for Residential Use

The 500-gallon capacity provides ample propane for most residential applications. For example, a 500-gallon tank suits a moderate-sized home using propane for heat, hot water, cooking, and appliances . Likewise, this size fits comfortably in a standard residential excavation footprint. Furthermore, the tank measures approximately 119 inches long with a 37-inch diameter . If you heat a typical family home, this 500-gallon underground tank meets your seasonal storage needs.

ASME Certification – Code-Compliant Construction

ASME (American Society of Mechanical Engineers) certification ensures safe, code-compliant pressure vessel construction. For example, the tank meets ASME Boiler and Pressure Vessel Code Section VIII, Division 1, stamped with the ASME “U” symbol . Likewise, the design complies with NFPA 58 (Liquefied Petroleum Gas Code) for underground container placement and safety requirements. Furthermore, SA-516 GR.70 carbon steel construction provides durability with a design pressure of 250 PSI at 125°F . If you require compliance for insurance or permitting, this ASME-certified tank satisfies regulatory requirements.

Underground Coating – Corrosion Protection

Underground tanks require specialized coating to resist soil corrosion. For example, “UG” (underground) tanks come with a durable exterior coating specifically formulated for buried installations . Likewise, this coating prevents corrosion from constant soil moisture and earth minerals . Furthermore, sacrificial anode systems provide additional cathodic protection for the steel vessel. If you bury the tank without proper coating, rapid corrosion will compromise its integrity within years.

Optional Riser and Installation Requirements

The tank includes standard fittings for underground installation with an optional vertical riser. For example, the riser brings fill and vent connections above ground level for easy access . Likewise, the tank requires excavation, backfilling, and proper bedding material (typically sand) for installation. Furthermore, you must maintain minimum separation distances from buildings, property lines, and ignition sources per local codes. If you need a complete installation, we recommend ordering the riser kit with your tank.

New Condition – Full Lifespan Ahead

This tank comes brand new, never used, with full manufacturer warranty. First, new construction uses SA-516 GR.70 carbon steel with precision PN-30 welding . Second, the coating remains pristine with no corrosion or damage. Third, the tank includes complete certification documentation for permitting. Finally, a new tank delivers the maximum possible service life (30+ years with proper installation). If you need long-term reliability, new construction provides peace of mind.

Dimensions and Specifications

Based on manufacturer data :

What’s Included and Installation

First, every tank includes the ASME-certified steel pressure vessel with underground corrosion coating. Second, we include standard fittings (fill, vent, service, and gauge ports). Third, we supply certification documentation for permitting. Finally, we provide lifting lugs for offloading.

For instance, you can add a riser kit to bring connections above grade. Likewise, we can supply anodes and cathodic protection system. Furthermore, we offer delivery coordination with crane offloading. Contact our team for complete quotes including delivery.

Pros and Cons

Pros:

• 500-gallon capacity (ideal for residential heating and appliances)

• Underground installation (preserves landscape aesthetics)

• ASME certified (meets NFPA 58 and insurance requirements)

• Corrosion-resistant coating (protects against soil moisture)

• 250 PSI design pressure (exceeds typical propane requirements)

• SA-516 GR.70 carbon steel (durable construction)

• New condition (full warranty, maximum lifespan)

• Maintains stable pressure (protected from temperature extremes)

Cons:

• Requires professional excavation and installation

• Higher total project cost ($4,200-$7,900 average)

• Needs cathodic protection (anodes must be checked periodically)

• Permits required in most jurisdictions

• Not movable after installation

Final Verdict

In summary, this new 500-gallon ASME underground propane tank delivers discreet, code-compliant fuel storage for residential propane systems. As a result, you can heat your home, power appliances, or run a generator while keeping the tank hidden below ground. Consequently, homeowners choose underground tanks to preserve property aesthetics while ensuring reliable propane supply . Therefore, choose this 500-gallon ASME underground tank if you need discreet, permanent propane storage for residential or light commercial use. If you need larger capacity for bigger homes, consider our 1,000-gallon underground tank. If you prefer above-ground installation, consider our AG (above-ground) painted tank version . Thus, request a free quote with your installation requirements and delivery postcode today. Return to our propane storage page for other sizes and configurations.