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A wide variety of colors are available for polyethylene storage tanks. Cosmetics to match the surrounding buildings and landscape, customer preferences, and the application or the chemicals being stored are factors determining tank color selection. However, one color which is almost always selected for higher end storage solutions, such as storing harsh, aggressive chemicals such as sodium hypochlorite, is black.

Poly Processing's tanks are manufactured in the United States and are able to accommodate a wide variety of fittings and locations of fittings. This flexibility allows for proper inputs and venting, ensuring a safe and effective solution for a given chemical and longer tank life as well. A common point of confusion that we hear from customers is: Which fittings can I use on my tank, and where can they be installed? We've tried to simplify the answer to that question by considering each area of the tank and the corresponding compatible fittings. 

Maintaining the proper temperature of a chemical inside a high density crosslinked polyethylene tank can be critical for safe and effective storage. For example, sodium hydroxide and caustic soda need to maintain temperature to prevent crystallization at lower temperatures.

You’ve heard the adage, “if a job is worth doing, it’s worth doing right.” Poly Processing believes this to be true 110% of the time when it comes to containment. Every single piece of a tank system needs to be completely secure to protect your workspace, your employees, the environment, and the chemical being stored. 

When you install a tank-within-tank or double wall storage tank system like the SAFE-Tank with a sidewall fitting, it may be important to also install a bellows transition fitting. The bellows fitting lets you safely connect the primary tank with the secondary containment tank.

With over 50 years of experience in creating tanks, fittings, accessories and other materials that ensure your chemical storage solution is safe and tailored to the chemical you are storing, we understand the importance of using the right products for your chemical. We’ve learned how the most popularly stored chemicals, like Sulfuric Acid, Sodium Hypochlorite and Hydrochloric Acid, react to improper storage systems. One part of those tank systems that is crucial is a tank’s gaskets. The tank’s gaskets act as a mechanical seal with a particular fitting to prevent leaks or spills. It is very important to make sure the gaskets and bolts used on your storage tanks are in compliance with what is needed to protect your tank fittings from corrosion caused by reactive chemicals.

Certain chemicals such as ferric, alum, and hydrochloric acid, are inherently higher temperature chemicals. To avert catastrophic failure of your chemical storage tank, a margin of safety is required to manage risk.

Poly Processing manufactures our tanks to meet your specific application requirements — including the type of chemical, the storage conditions, and the temperature of the chemicals you’re storing (among other considerations). 

Let’s take a look at the temperature factors you should keep in mind when purchasing a chemical storage tank.

Related: How to Keep Your Chemicals Cool When the Heat Is On

Maintaining the proper temperature of a chemical inside a SAFE-Tank® double wall tank is often critical for safe storage. For example, sodium hydroxide and caustic soda need to maintain temperature to prevent crystallization.

When you design a chemical storage tank, it’s commonplace to request extra or "spare" fittings in the sidewall. These fittings aren’t designated for anything specific, but at some point you might need to add another accessory to the tank. It’s convenient to have that fitting already installed and ready to go. 

This is a common practice, but it’s a potentially hazardous one. 

Every time you penetrate the sidewall of a tank, you introduce another potential leak. Fittings have gaskets that need to be maintained and monitored for cracking. Over time, fittings and gaskets can degrade and require replacement. The fittings also need to have the proper torque on them for a proper seal. 

Anytime a chemical storage tank is located outside, it’s exposed to harmful elements, such as sun, wind, and rain. Poly Processing recommends taking special considerations to protect the life of your storage tank, especially from damaging ultraviolet rays.

In some chemical storage tank applications, it is necessary to install a ladder to allow for inspection, to check gauges, and to service level sensors or mixers. In this blog we will discuss the various ladder options available, as well as which ladder system is best for your storage application.