Category: Polyethylene Tanks

Polyethylene tanks are used for the storage of most every conceivable liquid, drinking water, pharmaceuticals and aggressive chemical storage tank applications.

ASTM Rotational Molded Plastic Tanks, produces a one piece seamless construct, removing stress as a tank expands and contracts.

Welded process connections and compression type fittings with suitable gaskets, provide process inlets, outlets and vents.

Commercial Series is designed for liquids that have a specific gravity of 1.5 at 73 Degrees F

Industrial Professional series is designed for liquids that have a specific gravity of 1.9 at 73 Degrees F

Note: Chemical resistances are based on ambient temperatures and require additional consideration as temperatures elevate.

NSF 61 Certified Resins are available on all tanks

Seismic Zone 4 Restraint Kits – Resin comply with NSF and FDA requirements and USDA CFR 177.1520

Excellent chemical and impact resistance, ASTM 1998 “Specifications for Vertical rotationally molded polyethylene tanks.

Linear and Crosslink polyethylene resins – All tanks are UV stabilized – Compliance with Federal Spill Containment 40CFR 264.193

(Example) Water with a specific gravity of 1.0, produces pressure at a rate of: 1 PSIG per each 2.31 feet of elevation. 23 feet of water produces 10 psig…

We specialize in aggressive chemical storage containers,Hydrofluoric acid HF, Hydrochloric Acid HCL, Sulphuric Acid; Sodium Hydroxide Caustics. Sodium hypochlorite bleach, Sodium Bisulphate, Alum, Polymer Storage, and many other chemical storage tanks and containers.

Elliptical Leg Tanks

Elliptical Leg Tanks, with the exception of the 1600 Flat Bottom, REQUIRE SUPPORT BANDS.

All Elliptical Leg Tanks REQUIRE FULL LENGTH SUPPORT.

Availability Key: A=All; B=St.Bonifacius, MN; C=Lancaster, OH; D=Griffin, GA; E=Shawnee, OK; F=Tooele, UT; G=Owego, NY; H=Washougal, WA; I=Sheldon, IA; L=Hanford, CA; T=Fairfield, TX

Horizontal elliptical tanks are rotationally molded one piece seamless vessels. Rotationally molded polyethylene resins are UV resistant, NSF and FDA approved for a variety of food grade and pharmaceutical applications. Colors include black for sunlight sensitive liquids and translucent white for visible indication of level against molded in indicators In gallons.

All Elliptical leg tanks require full length bottom support as well as support bands which form an external exoskeleton. Elliptical plastic tanks require fully support to the tank bottom.

Elliptical Leg Tank Bands

Norwesco bands are custom fabricated to support the Norwesco tanks and are galvanized for added corrosion protection. Whether using the tank in a stationary position or for transport, bands are necessary to ensure that the tank retains its shape and integrity.