Applications
Spirolite® HDPE Vaults for Geothermal and Utility Systems
Spirolite® vaults are custom-fabricated from HDPE for lightweight, corrosion-resistant performance in underground geothermal and utility applications.
Spirolite® HDPE vaults are engineered for long-term performance in buried energy, utility and thermal exchange systems. Lightweight and easy to install, they offer an ideal alternative to concrete for geothermal vaults, electrical enclosures, valve boxes, and control structures. With diameters up to 120” and custom internal layout options, Spirolite utility and geothermal vaults are delivered jobsite-ready and built to handle pipe routing, mechanical components and field conditions that demand durability.
Spirolite Vault Applications
- Geothermal utility vaults
- Underground valve and metering enclosures
- Thermal energy exchange chambers
- Utility and data infrastructure boxes
- Custom underground control structures
Why Choose Spirolite Vaults?
HDPE withstands temperature swings, groundwater, and corrosive soils without coatings or liners.
Pipe penetrations, risers, internal platforms, and connection points are built to spec.
Vaults can be installed with less equipment and fewer crew.
Engineered to protect critical components in utility and thermal systems.
Used in high-profile projects like Princeton University’s 35,000 lb HDPE geothermal vault installation.
Project Spotlight: Princeton Geothermal Vault
ISCO fabricated a 31.5-foot-long Spirolite vault for Princeton University’s geothermal system. The 120” structure housed over 500 components and now supports one of the largest campus energy systems in the U.S.
Spirolite Resources
HDPE Geothermal Systems Solutions
Complete geothermal vault system capabilities.
Spirolite Technical Design Guide
Comprehensive reference for material performance, profiles, testing, and system capabilities.
Spirolite Installation Guide
Best practices and procedures for on-site assembly and handling.
HDPE Structures Installation Guide
Guidance for installation of large-diameter HDPE fabricated structures.
Learn more.
Browse Our ISCO Product Catalog.
Browse our comprehensive selection of pipe, fittings and ancillary products for industrial applications.
Read Our Field Reports.
Read field reports that profile the solutions we’ve delivered for customers in industrial projects and applications.
