Adler Tank Rentals is proud to now be a part of IRONCLAD Environmental Solutions. Learn more about our expanded services.

21K Gallon Round Bottom Dual Manifold Tank

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Dimensions: 46 ft. length x 8 ft. 6 in. wide x 11 ft. height

Tare Weight: 29,950 lb.

Product Description

Engineered for easy cleaning and the turning of heavy mud and fluids, our dual-manifold 21,000 gallon (500 BBL) closed-top frac tanks feature a round bottom, making it ideal for storing high-viscosity liquids.

A fixed rear axle increases its maneuverability, allowing the tank to turn and mix with ease. Round bottom tanks are ideal across a range of applications:

  • Construction
  • Pipelines
  • Refineries
  • Environmental Sites
  • Manufacturing
  • Agriculture

Mechanical Features

  • Epoxy-lined interior
  • 3" fill line
  • Four (4) standard 22" side-hinged manways
  • Multiple 4" valved fill/drain ports, including floor-level valves for low point drain out
  • 4" vent with 1 lb pressure/4 oz vacuum pressure relief valve
  • Round bottom for ease of turning heavy mud and fluids
  • Dual manifold
  • Easy-to-clean design with a smooth-wall interior, no corrugations, and no internal rods
  • Meets Cal/OSHA guidelines
  • Fixed rear axle for increased maneuverability
  • Nose rail cut-out for easy access when installing hose and fittings on the front/bottom of the tank
  • One (1) front and one (1) rear 4" valved fill/drain port
  • Three (3) top connection ports for vapor recovery

Technical Specifications

  • Dimensions: 46 ft. length x 8 ft. 6 in. wide x 11 ft. height
  • Tare Weight: 29,950 lb.
  • Capacity: 21,000 gallon (500 BBL)

Adler Tank Rentals offer closed top round bottom frac tanks available for rent with flexible plans. We have earned our reputation in the frac tank industry with 24-hour emergency service, expert assistance, and round-the-clock delivery. All our equipment is serviced by Adler technicians to ensure the highest industry standards. Call us today at 800-421-7471 or request a quote today!

Safety Features

  • Carefully selected standard material used on stairs and catwalk steps to avoid slipping
  • High visibility catwalks and rails in ”Safety Yellow”.
  • Decals with ”Safe Operation” reminders
  • Safety side stairway—no need to set up mechanical guard rails
  • Strapping charts
  • Tested using hydrostatic pressure testing


  • Round bottom
  • Dual manifold
  • SS 316 stainless steel
  • Bare steel interior
  • Heating coils
  • Level gauges (fixed or temporary)
  • White exterior for MSS compliance (availability varies by location)
  • Audible alarms, strobes and level gauges (digital and mechanical)
  • Available with single 8" manifold
  • 4" Jet line


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