Rotationally Molded Polyethylene Tanks

PKG Equipment Inc. carries a full line of corrosion and chemical resistant tanks rotationally molded from XLPE and linear polyethylene. These tanks come in a variety of standard sizes and vertical, sloped bottom, cone bottom, double wall, and horizontal configurations. They can be customized with accessories such as fittings, flex connections, liquid level gauges, ladders, tank stands, manway covers for pressure relief, wind/seismic restraint systems, and more. Tanks for the storing of certain chemicals, in addition to potable water, may be certified to NSF/ANSI 61 Standards upon request. Depending on the chemical service, PE tanks can handle chemicals with temperatures up to 150° F. Common applications for the use of molded polyethylene tanks are found in water and wastewater treatment involving inorganic acids and bases, cleaning and purification processes, plating, pharmaceutical manufacturing, chemical manufacturing, and food processing. Molded polyethylene tanks, designed to optimize chemical compatibility, safety, and longevity, provide a cost effective solution when operating parameters do not warrant the use of a custom fabricated tank.

Capabilities - Rotationally Molded Polyethylene Tanks

  • XLPE
  • Vertical
  • Sloped bottom
  • Double wall
  • Cone bottom
  • Horizontal
  • Natural
  • Black
  • Blue
  • Gold (HDPE only)
  • Yellow
  • Green
  • Vertical tanks from 40 to 13,650 gallons
  • Vertical tanks with full drain
    • flat bottom from 200 to 13,650 gallons
    • sloped bottom from 3950 to 11,800 gallons
  • Double wall tanks from 20 to 8700 gallons
  • Cone bottom tanks from 55 to 8000 gallons
  • Open top tanks from 30 to 14,650 gallons
  • Horizontal tanks from 25 to 2600 gallons
  • Secondary containment basins
    • cylindrical from 690 to 11,000 gallons
    • rectangular from 52 to 3500 gallons
  • Fittings
  • Manways
  • Tank stands
  • Ladders
  • Secondary containment
  • Insulation and heat pads
  • Flexible connections
  • Fill line assemblies
  • Liquid level gauges
  • Wind and/or seismic restraint systems
  • Molded flanged outlet
  • ASTM D 1998 (applies to one-piece seemless tanks molded from polyethylene through the rotational molding process which are flat bottom, cylindrical tanks for vertical above ground installation with capacities of 500 gallons or more)
  • NSF / ANSI Standard 61 for certain chemicals or water (when requested)
Resistances (varies depending on resin used to mold tank)
  • Corrosion
  • Chemical
  • Weatherability
  • Exceptional impact resistance
  • Petroleum product
  • Homogenous wall
  • Available with molded in drains
  • Lower cost than custom designed tank
  • Weatherability (UV stabilizers are standard, but especially resistant to UV light with carbon black added to the resin)
  • Impact, chemical, corrosion, and scratch resistant
  • FDA compliant resins available
Temperature Rating
  • Up to 150 °F depending upon chemical contents
Possible Applications
  • Wastewater treatment system
  • Pure water tank
  • Pumping station
  • Chemical process
  • Chemical storage
  • Others