21,000 Gallon Frac Tank

A 21,000 gallon frac tank, rated at 500 BBL, is the standard-size, heavy-duty steel tank used for large-volume solid and liquid storage on industrial and environmental sites. Its rectangular shape and high capacity give crews room to store liquids like fresh water, potable water, frac fluid, drilling mud, fuel, and process waste on one job. Choose the fully enclosed closed top when contents need to stay sealed against rain, debris, and contamination, or the open top when overhead loading and quick cleanout matter more. On its own, each tank stores up to 21,000 gallons, and several tanks can be tied together through a manifold when a job calls for more volume.

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The most versatile tank in our fleet.

IRONCLAD Powered by Mersino keeps a large fleet of 21,000 gallon steel frac tanks ready for a wide range of industries, including petroleum refining, chemical manufacturing, pulp and paper, and pipeline work.

500BBL (21,000 Gallons) Closed Top Steel Frac Tank, V-Bottom: A closed top unit in heavy-gauge steel whose V-shaped floor and built-in side channels pull liquids and settled solids toward the outlet for quick, thorough draining.

500BBL (21,000 Gallons) Closed Top Steel Frac Tank, Round Bottom: A round bottom with integral formed side channels feeds the floor drains at each end, so the tank empties cleanly and leaves little residue between jobs.

500BBL (21,000 Gallons) Closed Top Steel Frac Tank, Round Bottom with Step: The round-bottom tank fitted with an access stairway and a 36-inch grating walkway to the roof manway gives crews safe top access to gauge, sample, or fill it.

500BBL (21,000 Gallons) Steel Frac Tank with Steam Coils: A set of internal steam coils warms the contents and holds them at the temperature the product needs, including keeping it from freezing in cold weather.

500BBL (21,000 Gallons) Closed Top Insulated Steel Frac Tank: A UL-tested insulated tank built on an EPS panel system rated to R-16, with a patent-pending design that converts between insulated and non-insulated use in the field.

500BBL (21,000 Gallons) Open Top Steel Frac Tank: An open top gives a clear view of the contents and easy overhead access for storing, pumping, or treating liquids, with a full-length safety catwalk and a sloped floor that drains out completely for easier cleaning.

Each spec sheet lists the exact L x W x H, weights, valves, and lining options for that configuration. For current pricing, availability, and rental services in your area, request a free quote.

Our 21,000 gallon frac tanks provide:

For high-volume storage of wastewater, process water, groundwater, or other liquids, the 21,000 gallon frac tank is a solid rental option. The steel body takes heavy use, and the enclosed builds make routine cleaning and upkeep straightforward between jobs.

Key specs and features:

  • Capacity: Holds up to 21,000 gallons (500 BBL) on its own, and tanks manifold together when a job needs more volume.
  • Construction: Durable shot-blasted steel with a smooth interior wall for fast rinse-downs, plus an optional epoxy lining inside for potable water and corrosion-prone fluids.
  • Fittings: A butterfly valve on the drain line for controlled discharge, and an interface that works with vacuum truck loading and offloading.
  • Design: Offered in several bottom styles and configurations, each carrying the safety features a demanding site calls for.
  • Temperature Control: Add-on heat or steam coils that keep the stored product at the temperature the job requires.

Uses:


The 21,000 gallon frac tank shows up on jobs across pipelines, petroleum refineries, chemical plants, paper mills, and the wider environmental sector. Typical work includes groundwater remediation, construction dewatering, water storage for dust control, and emergency response.

  • Environmental Remediation: Store contaminated water or waste on site so the operation stays within its permits and limits its environmental impact.
  • Oil Field and Gas Industry: Stage big volumes of fluid, or blend drilling mud and other drilling fluids, on hydraulic fracturing and oil field jobs.
  • Fluid Storage Tank: Contain fresh water, diesel, fuel, stormwater, and other non-corrosive chemicals until they are reused, drawn for water supply, or sent for disposal.

Why rent a 21,000 gallon frac tank

Operations across many sectors choose to rent specialty containment assets from Ironclad for a few clear reasons.

Full-service rentals

With Ironclad, you get more than a tank drop-off. The team runs the whole rental, hauling the unit in, setting it, pulling it once the job wraps, and clearing the site, so your on-site storage is handled end to end.

Tested before every job

Before a tank goes back out, it is hydrotested to prove it still holds pressure without leaking, so you can count on it whatever the next site demands.

Scales with the job

Renting lets you match the number of tanks to the work in front of you, adding or returning units as the job grows or winds down, which helps keep both output and spend steady.

Closed top v-bottom steel tank rental

Reliable containment, backed by experience

Ironclad has long been a go-to name in specialty containment, trusted on construction sites, oil and gas operations, remediation projects, and well beyond. The 21,000 gallon tank is the standard size, and the steel fleet also carries mini tanks at roughly half the capacity and double-wall tanks with secondary containment built in for hazardous materials, so you can fit the tank to the material and the site.

We put the work in up front to match you with the correct tank, drawing on real field experience to sort out whatever the project needs. For more on configurations, availability, or pricing, reach out to Ironclad and the team will help you spec the right 21,000 gallon frac tank rental.

Upright poly chemical tank rental from Ironclad Environmental