Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓
Fire water tank: Frost-proof✓ Foldable✓ Large, e.g. 50 m³, 100 m³✓

fire water tank

Fire water tank (collapsible tank) – mobile fire water reserve for fire brigades & industry

The collapsible fire water tank is a flexible, readily available, and cost-effective fire water reserve for fire departments, industry, municipalities, and critical infrastructure. It serves as a mobile, temporary, or permanent fire water supply wherever hydrants are lacking , the available fire water supply is insufficient , or structural cisterns are uneconomical .

Thanks to its compact design when empty and its quick setup on site, the collapsible fire water tank is ideal for emergency preparedness, incident sites, construction sites, power plants, and remote locations . The collapsible fire water tank, when connected to an underground hydrant, is frost-proof down to -30°C and can be used for up to 25 years.



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Flexible fire water tanks and storage tanks, e.g. with a volume of 100 m³

The advantages of above-ground flexible storage tanks for firefighting water are:

  • Quick, easy and immediate installation.
  • Significantly lower investment costs than concrete or steel cisterns or underground fire water tanks
  • No maintenance or intervention required.
  • Freestanding.
  • Constant water level: No evaporation or loss of volume.
  • Can be used temporarily or permanently depending on the fire protection concept.
  • Mobile and reusable at changing locations
  • Clean water without microalgae or larval growth due to the absence of light and air pockets.
  • No air pockets, therefore no oxidation problems.
  • No light penetration, no contamination: The water always remains perfectly clean.

(Upon request, we can also supply residue-free evaporating spray cleaner for degreasing, as well as elastic adhesive and drinking water-safe silicone grease from WEICON.)

Areas of application for fire water tanks

  • Fire brigade deployment sites (e.g. forest, industrial and large fires)

  • Firefighting water reserve for industrial, logistics and commercial enterprises

  • Temporary fire water supply on construction sites

  • Supplementing or replacing missing fire hydrants in rural areas

  • Energy plants, substations, PV and wind farms

  • Events with fire safety regulations

Technical features of the foldable fire water tank

  • Robust, multi-layered high-performance plastic (PVC / PE)

  • UV, frost and weather resistant

  • Suitable for large water volumes as a fire water reserve

  • With Storz A or B connections , suction and filling nozzles

  • Suitable for pump operation and fire water supply

  • The closed design reduces contamination and evaporation.

Fire water tanks for fire protection & authorities

The collapsible fire water tank is suitable as a component of fire protection and fire water concepts that comply with official regulations. It can be used as a temporary or permanent fire water container , a replacement solution , or an additional reserve – e.g., during renovations, changes of use, or temporarily increased fire water demand.

Note: Recognition as a fire water reserve is dependent on the project and the authorities. Coordination with the fire department, fire protection planner, or permitting authority is recommended.

Folding tanks as an alternative to fire ponds

The collapsible tank system is closed, meaning that, unlike fire ponds, there is no risk of drowning for children. Furthermore, the closed design prevents silt accumulation, significantly reducing maintenance. Extensive upkeep is unnecessary, making maintenance simple and cost-effective.

Technical specifications: The fire protection reservoir offers a reliable and adaptable solution for storing fire-fighting water. It is available in various sizes and can hold a volume of up to 2000 m³. Its design allows for quick and flexible installation. The reservoir is designed for a wide temperature range from -30°C to +70°C. This means the cisterns can be used reliably in extreme sub-zero temperatures down to -30°C as well as in hot summer temperatures. Even in freezing conditions, the water inside the fire-fighting cistern remains liquid and ready for use.

There are three connection options for the foldable fire water storage tank:
  1. Mobile, above-ground version for direct extraction with suction connection / shut-off valve for mobile collapsible tank with Storz A coupling (e.g. for temporary use or the risk of forest fires in summer) – with an additional optional heat-insulating valve heat protection sleeve that prevents the outlet valve from freezing at moderate sub-zero temperatures.
  2. Forest-free version with hydrant and suction connection with Storz-A connection ND100 according to DIN 14244 (with underground, dry pipeline to the hydrant)
  3. Frost-free version with connection to customer-provided underground pipeline

The frost-proof, underground extraction point (connection option 2 with hydrant or connection option 3 with customer-provided underground pipeline) ensures a reliable water supply at all times, regardless of the current weather conditions.

Available size of fire water tanks

The fire water tanks are available in the following sizes - typically ordered sizes for fire water tanks are 30 m³, 50 m³ or 100 m³.

Volume (m³) liter Length (m) Width (m) Height (m)
1 m³ 1,000 l 2.47 1.48 0.50
5 m³ 5,000 l 3.55 2.96 0.75
10 m³ 10,000 l 5.83 2.96 0.90
15 m³ 15,000 liters 4.77 4.44 1.10
20 m³ 20,000 liters 5.83 4.44 1.20
25 m³ 25,000 liters 6.63 4.44 1.30
30 m³ 30,000 liters 7.95 4.44 1.30
40 m³ 40,000 liters 8.53 5.44 1.30
50 m³ 50,000 liters 8.53 5.92 1.45
70 m³ 70,000 liters 9.22 7.40 1.50
100 m³ 100,000 liters 9.83 8.88 1.60
120 m³ 120,000 liters 11.70 8.88 1.60
150 m³ 150,000 liters 14.10 8.88 1.60
200 m³ 200,000 liters 15.59 10.36 1.60
250 m³ 250,000 liters 16.66 11.84 1.60
300 m³ 300,000 liters 17.47 13.32 1.60
400 m³ 400,000 liters 20.50 14.80 1.60
500 m³ 500,000 liters 22.94 16.28 1.60
600 m³ 600,000 liters 24.93 17.76 1.60
700 m³ 700,000 liters 26.60 19.24 1.60
750 m³ 750,000 liters 28.41 19.24 1.60
800 m³ 800,000 liters 30.22 19.24 1.60
900 m³ 900,000 liters 31,36 20.72 1.60
1,000 m³ 1,000,000 liters 34.70 20.72 1.60

Special sizes up to 2,000 m³ with a maximum height of 1.6 m and intermediate sizes of 10 are available on request.

The collapsible tanks store water (potable/non-potable), wastewater, fire-fighting water, fuel, and all types of liquids. These fire-resistant reservoirs are constructed from advanced technical fabrics that offer exceptional reliability and durability. Optimized for flexible use with large storage volumes, these fabrics can accommodate volumes of up to 2,000 m³. These unique storage systems offer high resistance and reliability.

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