Drinking Water Storage Tanks


DOOWIN drinking water storage tanks are small size commercial collapsible bladder tanks. It is one kind versatile potable water bladder storage tanks. It can be used for boat, yacht, truck, camping, and other locations for emergency or long-term drinking water storage.

DOOWIN water bladder tanks are constructed from top grade fabric for the potable water made in Germany. These fabric materials are certificated with the American NSF/ANSI 61 standards. All DOOWIN drinking water storage tanks meet or exceed all standards of NSF 61 specification. So you can be assured that our portable water tank does not pose any risk of contamination to drinking water

Drinking Water Storage Tanks Construction

Our drinking water storage tanks are small size from 100L to 3,000L. Each water bladder tanks includes below items:

  • Water Bladder Tanks: the drinking water storage tanks are constructed from top grade fabric for the potable water NSF/ANSI 61, KTW, ACS approved. All seams are weld by HF welding technology, without using any glue or hot-air. It ensures the bladders no taste or odor.

  • Filling Fittings: we use the aluminum, stainless steel or PP flange and 1-1/2’’ cam-lock with one safety cap. When filling pure drinking water, the user can take offer the safety cap, connect the male com-lock end with the female com-lock end of filling hose. Or, put the filling hose into the com-lock directly.

  • Outlet Fittings: we use the aluminum, stainless steel or PP outlet port flange. Then, connect with one 90 degree elbow and one 1’’ stainless steel ball valves, end with one PP hose nozzle.

  • Water Hose: we will provide one 2m length potable water hose with nozzle for each bladder. The longer hoses are available upon request.

  • Ground Sheets: the standard ground sheet is white color. it is optional parts. I will be supplied upon request.

  • Tie-Down System: there are fours mooring points on the water bladders. The users can use the rope or belts connect it with the boat to fix.

  • Optional Accessories: we also supply the hand bags, sun-shield and other accessories upon your request.

Drinking Water Tanks Specification

There are two typical types of drinking water tanks: Pillow Type and Cube Types. Its standard sizing range from 100L to 3,000L.

We also can make other shapes and customized sizes upon specific request. Below you will find typical sizing and filled dimensions for our portable drinking water tanks. Collapsible drinking water bladder tanks fold flat for easy storage and transport, and are easy to fill and drain.

Pillow Type Drinking Water Bladders                               Cube Type Drinking Water Tanks

drinking water storage tanks size

The above size in only for reference. We may change it without notice.

Advantages and Features of Drinking Water Storage Tanks

The biggest advantages of drinking water storage tanks comply with NSF/ANSI 61, KTW, ACS potable water standards, no taste or odor. This potable drinking water bladder.

  • Fabric made in Germany
  • NSF approved fabric material
  • Top notch UV resistance
  • Excellent abrasion properties
  • Light weight, High strength
  • Easy to storage and shipment
  • Easy to setup and operate
  • Various size and customized size
  • Customized size available
  • Various filling/discharge fittings
  • Easy to step up and operate

Innovative HF Welding Technology

We use HF welding technology. The HF welding seams have better tensile strength than the hot-air welding seams. It has more stable performance, not easy to separate for long term storage.


Traditional Hot-Air Welding Technology

We abandon the traditional hot-air welding technology. The hot-air welding seams are not persistent. The seam is easy to seperate. Some inferior bladders prefer this welding.

Drinking Water Storage Tanks Material

Drinking water is our most vital commodity. We have to ensure the quality of the drinking water that stored in our pillow tanks cannot be affected by contact with other material.

DOOWIN use the top grade fabric for the drinking water storage tanks made in Germany. These fabric material are certificated with the American NSF/ANSI 61 or FDA standards. So you can be assured that our portable water tank does not pose any risk of contamination to drinking water.

>> Check our NSF certificate.


Customized Drinking Water Tanks

We can make any size and shape drinking water bladder tanks according to customer’s specific request. Please contact us to order your own drinking water bladder tanks.

Customized drinking water storage tanks


Certificated quality for drinking water. Our fabric material is certificated comply with NSF/ANSI 61 drinking water standard. No taste or odor. Suitable for long-term storage potable drinking water.

We use the top quality fabric material for drinking water storage tanks, which is NSF/ANS certificate. For the details material performance, please feel free to contact us.

We will provide buyers manufacturer certificate free of charge. We also can provide third party certificate upon customer’s request.

We have different design for different storage requirements. There are 3 years, 5 years, 7 years, 10 years design. But it also is based on the application environment.

We provide warranty period for 2 years.

We can make any customized size and shapes. Please feel free to contact us order your own specific water tanks.