Free Standing Horizontal Tanks

FREE STANDING HORIZONTAL TANKS are available for a variety of custom applications in both stationary and portable configurations. Manufactured from medium-density polyethylene with U.V. inhibitors and designed for containment of liquids of up to 1.7 specific gravity. Tank walls are translucent for level viewing and equipped with gallon indicators.

Free Standing Horizontal Tanks are selected when transportable (non-DOT regulated) containment is required for indoor or outdoor applications. Tanks are equipped with moulded-in legs to support the tank and band/hoop locators for tie-down.

ROUND HORIZONTAL TANKS match the specs of the free-standing horizontal tanks above, but require cradles and bands to support the round bottom. All tanks are equipped with drain-out sumps.

ELLIPTICAL TANKS can be selected for stationary or transportable (non-DOT regulated) applications both indoor and outdoor. The elliptical tank lowers the center of gravity to enhance stability and visibility. The tanks feature a standard 2 1/2″ collection sump on the bottom for full drain out. an 8 1/2″ deep sump option is available in five sizes. The Sump is located directly under the lid on standard tanks, but a center sump option is available on tanks between 500-1250 gallons. These tanks require the bottom to be fully supported with a cradle for use. The tanks are manufactured from medium-density polyethylene with U.V. inhibitors and designed for containment of liquids of up to 1.7 specific gravity. Tank walls are translucent for level viewing and equipped with gallon indicators.

Pickup Tanks are selected as applicator tanks or when transportable (non-DOT regulated) containment is required. Tanks are designed to fit most pick up trucks. Tanks are manufactured from medium-density polyethylene with U.V. stabilizers and designed for containment of liquids of up to 1.7 specific gravity. Tank walls are translucent for level viewing and equipped with gallon indicators.

Horizontal tanks have many uses, including:
Storing chemicals
Horizontal tanks are used to store a variety of chemicals, including solvents, alcohols, ketones, and ethers, at manufacturing plants. They are often used to store corrosive or flammable liquids. be sure to check this chemical data sheet prior to storing chemicals in your tank.
Storing water
Horizontal tanks are used to store water for agricultural and water treatment applications, along with water delivery trucks.
Storing petroleum products
Horizontal tanks are used to store petroleum products, such as oil, fuel, and lubricants, in petroleum-storage depots, oil production and refining enterprises, and other industrial facilities.
Storing food products
Horizontal tanks can store food products.
Buffer tanks
Horizontal tanks can be used as buffer tanks in applications such as air conditioning.
Horizontal tanks are often cylindrical, shorter, and broader than vertical tanks. They have a lower center of gravity, making them more stable than vertical tanks, especially during transport. They are also easier to transport and require less personnel to handle.

Maintaining a polyethylene (poly) Free Standing Horizontal Tanks liquid storage tank is essential for ensuring its longevity and preventing costly repairs. Proper maintenance should include steps like regular inspections, cleaning, proper installation, and more.

Below you’ll find our guide to help you get the most out of your horizontal tank purchase.

Regular Inspections:

Frequency: Conduct regular visual inspections, ideally monthly, and more thorough inspections annually.

What to look for:

1. External: Check for bulges, cracks, discoloration, leaks or any signs of physical damage to the tank body. Pay close attention to areas around fittings and nozzles.
2. Support Structure: Ensure the tank is properly supported and that the supports are in good condition. Poly tanks require continuous support to prevent stress cracking.
3. Fittings and Connections: Inspect all fittings, connections, and gaskets for leaks or damage.
4. Venting: Verify that vents are clear and functioning correctly to prevent pressure buildup or vacuum.

Cleaning:

Frequency: Clean the tank as needed, depending on the stored liquid and environmental conditions. This is typically done annually, and always prior to switching to a different liquid.

Procedure:

1. Empty the tank completely.
2. Ventilate the tank to remove any residual vapors.
3. Use appropriate cleaning methods:
   1. For general cleaning: Use a mild detergent and warm water solution.
   2. For stubborn stains or residues: Consult the tank manufacturer or a cleaning agent supplier for recommendations on compatible cleaning agents.
4. Avoid harsh chemicals or abrasive cleaners that could damage the polyethylene material.
5. Rinse thoroughly to remove any cleaning agent residue.

Preventing Degradation:

• UV Protection: Our tanks are manufactured with UV stabilizers and have a UV rating of 15 on most product materials. This means that after 15,000 hours of exposure to the sun, there will be 50% of UV protection remaining.
• Temperature Considerations: Our tanks handle sustained temperatures of up to 120° F (49° C) and intermittent temperatures of up to 140° F (60° C). Freezing temperatures will not have an effect on a polyethylene tank, however they may expand slightly in the cold. 
• Chemical Compatibility: Ensure the stored liquid is compatible with the polyethylene material. You can find the Den Hartog Chemical Resistance chart here.

Support and Installation:

• Proper Support: Ensure the tank is installed on a flat, level surface with continuous support across the entire bottom. This is crucial to prevent stress cracking. Common examples would be the flatbed of a truck or trailer for mobile applications. 
• Avoid Point Loads: Avoid placing the tank on uneven surfaces or supports that could create point loads and stress concentrations.

Additional Tips:

• Consult the Manufacturer: Refer to the tank manufacturer's documentation for specific maintenance recommendations and guidelines. You can find the full Den Hartog Technical Guide here.
• Keep Records: Maintain records of all inspections, maintenance activities, and repairs.