Water Storage Bladders
DOOWIN produce the wide-range professional high-quality wide range bulk water storage bladders, known as bladder tanks or collapsible pillow tanks. These bulk water storage bladders tanks are designed to hold up to 800,000L and are an excellent way to contain various liquid in fuel, water, and chemical industries.
DOOWIN bulk storage pillow bladder tanks are constructed from the highest quality PVC or TPU coating fabric material available to help keep liquids securely contained for the duration of their storage life.
Water Storage Bladders Construction
Please refer below general drawing for the small, middle and large water storage bladders.
Inlet Fittings: The standard filling fitting is 2”, 3” and 4” high quality PP flange with cam-lock with one safety cap (refer below picture). The other material filling port and camlock are available upon request. We can do aluminum or stainless steel flange and cam-lock, with stainless steel or brass ball valves.
Outlet Fittings: The standard filling fitting is 2”, 3” and 4” high quality PP flange with cam-lock with one safety cap (refer below picture). The other material filling port and camlock are available upon request. We can do aluminum or stainless steel flange and cam-lock, with stainless steel or brass ball valves.
Optional: Groundsheet can protect your water storage bladders. It will be supplied upon request.
Fill/Discharge Valve (2” or 3”) Drain Valve (2” or 3”) Air Bleed
Water Storage Bladders Specification
DOOWIN water storage bladders are from 200L to 800,000L. Below you will find our standard specification of bulk storage pillow tanks. Customized size and shape are available upon request. If you have any special request, please contact us now.
The above size in only for reference. We may change it without notice.
Advantages and Features of Water Storage Bladders
DOOWIN bulk water storage bladders are produced by HF welding technology for the better performance. Donot use glue or hot-air.
- Low profile when filled
- Flat when empty
- UV resistant, oil resistant
- Top notch UV resistance
- Excellent abrasion properties
- Light weight, High strength
- Easy to storage and shipment
- Easy to setup and operate
- Wide range of use
- Wide range capacities up to 800 m3
- Customized shape and size available
- Various filling/discharge fittings
- Can be used for potable drinking water tanks
- Fabric meet NSF 61 requirements
Innovative HF Welding Technology
DOOWIN pillow tanks 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.
Water Storage Tanks Material
Normally, the fabric used to construct the pillow water tanks are non-potable grade. If you will be using the rainwater for drinking water purposes, we also can make these pillow rainwater storage tanks with NSF certificated material.
PVC Coating Fabric Material: This material is the same as the Non-Potable Water Bladders Material. DOOWIN use the top grade fabric for these non-potable water bladders.
Our water storage bladders are made of extremely robust flexible fabric material. These fabrics have high-strength polyester base fabric and special inner coating. It has super high UV resistant or oil resistant. It cannot be cracked after long time use.
Potable Water Pillow Tanks Material: This material is the same with our potable water tank’s material. 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 tank made in Germany. These fabric material are certificated with the American NSF/ANSI 61, KTW, ACS 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.
TPU Coating Fabric Material: Our collapsible bulk fuel pillow tanks are made of high-quality TPU coating fabric material allow for oil or fuel long-term storage due to their excellent material properties. For long-term storage applications, built to withstand extreme conditions and provide the highest level of reliability.
Material Thickness: 0.6 ~ 1.4mm; Weight: 900g ~ 1800g/m2; Strength: 4000N ~ 10,000N/5cm
Important Notice: Please donot always focus on the strength and thickness of fabric material. It is only is one side of good material. The most important point is the PVC/TPU coating formula. It can ensure the material have best UV resistance, oil resistance, abrasion resistance, fire resistance and other performance.
Water Storage Pillow Tanks Application
We can make the water storage bladders fother below application and more. In one word, if you want to store drinking water, choose DOOWIN potable water tanks.
Water Storage Bladders
DOOWIN water storage bladders can be used to store almost all kinds of water. We list some common water storage application. If you have a special request, please feel free to contact us.
- Potable drinking water storage (KTW, ACS, NSF)
- Non-potable water storage: service water, process water, production water, black water, gray water, rainwater, brine water, fracking water, oil field water …
Food Storage Bladders
Our food storage storage tanks are constructed from the certified fabric according to EU guideline VO No.10/2011, EC list No.1935/2004 and US FDA Rules and Regulations.
- Dry or liquid foods
- Alcohols (>15% vol, or <15% vol.)
- Cooking oils, oily spices
- Greasy foods
- Acidic foods
- Wine press
Chemical & Petro Storage
Bulk stroage pillow tanks allow for quick and reliable storage for wide range of petroleum and chemical products.
- JetFuel (Including JP-8)
- MOGAS • AVGAS
- Lube Oil
- Crude Oil
- Dielectric Oil
- Hydraulic Oil
- Mild chemicals
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 have material from 0.8mm to 2.0mm for different application. Please donot always focus on the strength and thickness of fabric material. It is only is one side of good material. The most important point is the PVC/TPU coating formula. It can ensure the material have best UV resistance, oil resistance, abrasion resistance, fire resistance and other performance.
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.