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Flexible Onion-Shape Potable Water Storage Bag – Drinking Tank

💧 Product Summary The RAINBOW Flexible Onion-Shape Potable Water Storage Bag is a food-grade flexible water storage solution designed for safe drinking water storage, emergency supply, and remote water management. Its unique onion-shaped structure expands when filled and becomes a stable self-supporting tank without requiring a rigid frame. Made from...

Price: $62.00 USD – $280.00 USD

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Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Delivery

    All orders shipped with UPS Express.

    Always free shipping for orders over US $250.

    All orders are shipped with a UPS tracking number.

Returns

    Items returned within 14 days of their original shipment date in same as new condition will be eligible for a full refund or store credit.

    Refunds will be charged back to the original form of payment used for purchase.

    Customer is responsible for shipping charges when making returns and shipping/handling fees of original purchase is non-refundable.

    All sale items are final purchases.

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💧 Product Summary

The RAINBOW Flexible Onion-Shape Potable Water Storage Bag is a food-grade flexible water storage solution designed for safe drinking water storage, emergency supply, and remote water management.

Its unique onion-shaped structure expands when filled and becomes a stable self-supporting tank without requiring a rigid frame. Made from high-quality potable water-safe materials, this foldable water bladder helps maintain clean and secure water storage.

With customizable capacities from 200L to 10,000L, this portable drinking water tank is suitable for disaster relief, agriculture, construction, marine, military, and industrial applications.


🛡️ Best Applications

Ideal for:

  • 💧 Drinking water storage
  • 🚨 Emergency disaster water supply
  • 🏕️ Remote area water storage
  • 🏗️ Construction site water supply
  • 🌱 Agricultural irrigation support
  • 🐄 Livestock drinking water storage
  • ⚓ Marine water transportation
  • 💧 Military field water supply
  • 🏭 Industrial temporary water storage
  • 🏠 Backup household water storage

Common usage locations:

  • Emergency relief camps
  • Remote communities
  • Construction projects
  • Farms and ranches
  • Ships and marine operations
  • Military bases
  • Outdoor work sites
  • Industrial facilities
  • Off-grid locations

⚖️ Comparison Table

Feature Onion-Shape Potable Water Bag Rigid Plastic Water Tank Steel Water Tank
Drinking Water Safety Food-grade material Depends on material Requires coating
Storage Space Folds compact when empty Fixed size Fixed size
Transportation Easy Difficult Very difficult
Installation Quick deployment Requires placement Requires equipment
Weight Lightweight Heavy Very heavy
Portability Excellent Low None
Emergency Use Excellent Moderate Limited
Custom Sizes Available Limited Difficult
Long-Term Storage Yes Yes Yes
Remote Use Ideal Difficult Not practical

⚙️ Technical Specifications

Specification Details
Product Name Flexible Onion-Shape Potable Water Storage Bag
Product Type Foldable drinking water bladder
Brand RAINBOW
Material Food-grade potable water material
Water Type Drinking / potable water
Structure Self-supporting onion shape
Design Flexible and collapsible
Storage Style Compact when empty
Customization Color, thickness, capacity
Capacity Range 200L – 10,000L
Installation Quick setup
Leak Protection Sealed flexible construction


Available Sizes

Capacity Top Diameter Bottom Diameter Height
200L 35 cm 80 cm 80 cm
500L 60 cm 110 cm 80 cm
1000L 80 cm 140 cm 100 cm
1500L 100 cm 160 cm 110 cm
2000L 120 cm 180 cm 120 cm
3000L 130 cm 200 cm 140 cm
4000L 130 cm 240 cm 145 cm
5000L 140 cm 280 cm 140 cm
10000L 240 cm 360 cm 140 cm

🔧 Performance Features

Food-Grade Drinking Water Storage

The potable water bladder is manufactured with safe materials designed for storing drinking water while maintaining water quality during storage.

Self-Supporting Onion Design

The onion-shaped structure expands naturally when filled, providing stability without requiring a complex support frame.

Flexible & Space-Saving Storage

When empty, the tank folds easily for transportation and storage, making it suitable for temporary and remote applications.

Custom Water Storage Solution

RAINBOW offers customized sizes, colors, and material options to match different water storage requirements.

Emergency-Ready Water Supply

Designed for disaster response, remote locations, and emergency situations where reliable drinking water access is needed.

Durable Outdoor Performance

The flexible construction provides resistance against outdoor conditions while maintaining long service life.


🏭 Trust / Manufacturer Section

RAINBOW specializes in manufacturing flexible liquid storage solutions including potable water bladders, fuel tanks, and customized storage systems.

Our onion-shape potable water bags are engineered for:

✔ Safe drinking water storage
✔ Emergency preparedness
✔ Portable water supply
✔ Agricultural applications
✔ Industrial water management

Since 2006, RAINBOW has provided reliable flexible storage solutions with strict quality control and durable manufacturing standards trusted by customers worldwide.

Have Questions? Contact Us!

📞 Call us: +86-29-88369398
📧 Email us: connie@softliquidtank.com
📱 WhatsApp us: +86-18829501828

Let us know your specific water storage needs, and we’ll be happy to assist you!

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Express Delivery

  • Europe & USA within 2-4 days
  • Rest of the world within 3-7 days
  • Selected locations

Frequently asked questions

Why is it called an onion-shape water storage bag?

When filled, the flexible bag expands into a rounded onion-like shape that helps improve storage stability and water pressure distribution.

Is the storage bag safe for potable water?

Yes, it is manufactured using food-grade PVC material specifically designed for drinking water applications.

Can the bag be folded for transportation?

Yes, the flexible structure allows easy folding and compact storage when empty.

Is it suitable for outdoor use?

Yes, the material is UV-resistant and designed for outdoor operational environments.

What applications is this water storage bag suitable for?

It is suitable for emergency water storage, agriculture, disaster relief, construction projects, and remote operations.