Polyethylene plastic water tank
Lightweight, corrosion-resistant polyethylene tanks
A polyethylene water tank is made in one seamless piece by rotational moulding, so there is no risk of leaks at a weld or joint. These tanks usually come vertical or horizontal in small to medium capacities.
Key features
Technical details
A three-layer shell with a light-blocking middle layer keeps sunlight out of the tank, prevents algae growth and preserves the quality of the stored water. They can also hold chemicals compatible with polyethylene, but not strong acids or organic solvents.
Behineh Ab supplies standard polyethylene tanks for domestic, agricultural and workshop use and installs them on the project site.
Technical specifications
Single or double wall: which is better for drinking water?
A single-wall tank is enough for general and agricultural use and costs less. A double-wall tank, with a gap between its two walls, gives more protection against impact and a possible leak in the first layer, and is preferred for drinking water or where a leak would be high-risk.
Hygienic grade and drinking-water contact standards
Drinking-water tanks must use a food-grade polyethylene with no additives harmful to health. This grade usually comes with a black or dark shell to keep light out and prevent algae growth in the stored water.
Temperature limits and underground or above-ground installation
Polyethylene softens at very high temperatures and can become brittle in severe frost, so the operating temperature range must be checked before choosing the grade. Underground installation requires calculating the tank's resistance to the surrounding soil pressure, while above-ground installation needs only a level, even foundation.
Applications and industries
Photo gallery
Polyethylene water tank gallery
Frequently asked questions
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Polyethylene plastic water tank
Enter the pressure, temperature and fluid; our engineers send a technical proposal and price within 24 working hours.
- Written technical reply with a proposed concept drawing
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- 24-month warranty on fabrication and welding
