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Flare Knockout Tanks

Our flare knockout tanks are the preferred, fit-for-purpose solution for well sites

ZCL | Xerxes flare knockout tanks offer a virtually maintenance-free storage solution for well sites. Made of 100% premium fiberglass and resin, they are corrosion-resistant and outlast steel tanks used to relieve pressure from well-site separators by flaring gas. ZCL | Xerxes double-wall tanks are available as aboveground, underground or partially buried tanks. Structurally strong yet lightweight, our tanks are also easy to ship and install and can be easily moved and reinstalled as needed.


ZCL | Xerxes fit-for-purpose fiberglass tanks provide customers with peace-of-mind through corrosion-resistant, maintenance-free storage solutions that simply outlast tanks made of any other material.

  • Common capacities from 25 to 100 barrels
  • Common diameters from 4 feet to 8 feet (1.2 to 2.4 meters)
  • Full range of accessories, including:
    • Level gauges
    • Leak detection system
    • Heaters
    • Enclosures
    • Foam insulation
  • Available in 25-, 50- and 100-barrel tanks (MAWP 14.9 PSI)
  • Available as filament-wound tanks (50 PSI noncode design) in 50- and 100-barrel sizes
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Crafted for performance, flexibility & safety

Discover the benefits of our advanced fluid storage technology and product expertise for enhancing system design and extending project lifecycle performance.

100% Premium Resin and Glass (No Fillers)
ZCL | Xerxes tanks are constructed of 100% premium resin and glass. We use no fillers or recycled materials, which sets us apart from many tank options. We maintain our standard of excellence by performing verification tests on our resin and glass to ensure that only high-quality materials are used in the manufacturing process.
Corrosion Resistance Inside and Out
ZCL | Xerxes tanks are made of fiberglass, which means they are inherently resistant to corrosion. Because they are corrosion-resistant inside and out, you’ll have the peace of mind of choosing a tank that helps preserve and protect the environment. You’ll also enjoy a lower cost of ownership than with steel and concrete tanks, which corrode over time and require maintenance.
Flexible Design & Installation Options
ZCL | Xerxes fiberglass tanks come in a wide range of sizes and designs – along with numerous accessories and monitoring options – to meet a variety of site and regulatory requirements, for both underground and aboveground installations. Contact us today to discuss your next project.
Installation Made Simple
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