... liquid storage or transportation of oil, water. DooFlex Pillow Type PVC Water Tanks (Water Bladder) are normally “pillow” shaped tanks having a low profile, made ... liquid storage of oil, potable water, sewage, rainwater chemical spillage waste and other liquids. Pillow pvc water tanks are very lightweight, reliable, ... zones- Repair kits- Non-toxic PVC coating fabric for drinking water, food tank