Onion Tanks

Onion Tank in use.

Self supporting Onion Tanks are suitable where an instant/emergency liquid storage tank is required.
These tanks are easily cleaned and are therefore suitable for storing raw/waste/drinking water, in-tank flocculation and environmental spill collection.


The collapsible tanks are supplied complete with groundsheets, covers, repair kit and instruction manual.
Full Onion Tank. Roof tie detail.

  • Requires only an area of level ground.
  • Suitable for all climates.
  • Installation time from 2 minutes for 1 person.



Onion Tank Material Specifications

Main Bag & Roof Cover Material

Characteristic Specification
Base cloth PES / PES
Total weight (approx.) 1100 g/m²
Base cloth construction Panama 2/2 275 g/m²
Construction 12/13 threads/cm
Coating calender Dull
Breaking strength 4000 N / 5cm + 6000 N / 5cm
Tear strength 600 N
Adhesion 90 N/5cm
Temperature resistance -30°C to + 70°C
Colour Beige 46002
Special properties Special quality for contact with potable water and food


Groundsheet Material

Properties Specification
Width/Finish 150 / 205cm / Matt
Base fabric High tenacity polyester
Coating Flexible plasticised PVC
Total weight 610g/m² +/- 25g/m²
Tensile strength 2300 N / 5cm (ave.)
Tear strength 400 N (ave.)
Coating adhesion 100 N / 5cm (ave.)

Special sizes are manufactured to order.

Full Onion Tank with roof fitted.

Roof Covers

All tanks are supplied with circular roof covers with an integral central floatation block.
The covers are tied in position.

Groundsheets

All tanks are supplied with circular groundsheet 1m larger than the tank.

Packaging

Each tank is packed with its groundsheet and cover in one plywood case ready for export.
Onion Tank outlet.

Outlets


All tanks are fitted with 2 x 3" BSP (F) aluminium outlets with male adaptors and 3" BSP (F) gate valves.

 

Onion Tank Sizes and Storage Capacities

Tank Ref:
Capacity (litres):
Base diameter:
Top diameter:
Height when full:
Groundsheet diameter:
OT10
10,000
3.50m
2.50m
1.50m
4.50m
OT15
15,000
4.00m
3.00m
1.50m
5.00m
OT20
20,000
4.75m
3.75m
1.50m
5.75m
OT30
30,000
5.50m
4.50m
1.50m
6.50m

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Onion Tank