Liquid storage can be classified into two main categories: pressurized and atmospheric pressure storage. Bailiff Enterprises has no interest at the moment in storing liquid in a pressurized state as we are focused on fully developing a line of storage containers that make storing any and every liquid possible. Our current lineup consists of Polypropylene, PVDF/Kynar, and Polyethylene. These three plastics can be molded in very large tanks/containers, making us capable of manufacturing tanks for almost every liquid imaginable.

High-Density Polyethylene (HDPE) Liquid Storage

HDPE is a top choice for atmospheric liquid storage due to its excellent resistance to impact and chemicals. This versatile polymer is lightweight yet strong, making it ideal for tanks and containers. Additionally, HDPE is known for its durability in harsh environments and its ability to handle a range of liquids, from potable water to various industrial chemicals. HDPE is our bread and butter, as we have molded parts in HDPE since 1981. The requirement/recommendation for all atmospheric tanks is to have 1″ larger of a vent than the largest inlet or outlet, ensuring that atmospheric pressure is maintained.

The Benefits of Polypropylene

Polypropylene, being another robust polymer, possesses a high resistance to chemical exposure and has a significant tolerance for heat. The Polypropylene we use, RMPP141, is known for combating heat up to 212 degrees F. The downfall is that the polymer/tank tends to crack on impact at freezing temperatures. This can be combated by using a heat trace element and a mastic-coated polyurethane excellent for Sodium hydroxide (Caustic soda 80% +), something that requires a higher storage temperature because of its low-temperature hardening properties. Polypro can also be used with diesel storage and other liquids. HDPE is not necessarily the best for.

The investment plastic: PVDF/Kynar

Polyvinylidene fluoride (PVDF) is an exceptional material for atmospheric liquid storage due to its outstanding chemical resistance, durability, and thermal stability. Unlike other plastics, PVDF can withstand exposure to a wide range of aggressive chemicals, including acids, bases, and organic solvents, making it ideal for industries handling corrosive substances.

Additionally, PVDF has excellent UV and weather resistance, ensuring long-term performance in outdoor storage applications without degradation from sunlight or environmental factors. Its high purity and low permeability make it a preferred choice for industries such as pharmaceuticals, water treatment, and specialty chemicals, where contamination must be minimized.

With their superior mechanical strength and longevity, PVDF storage tanks provide a reliable and cost-effective solution for safely containing liquids under atmospheric conditions, reducing maintenance costs, and enhancing operational efficiency.

Find a link to the specific Kynar resin we use here (also comes in black): https://hpp.arkema.com/en/products/product/f/flup_hpp_Kynar/p/kynar-flex-2850-wr-powder/