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Yes, depending on the date of manufacture and type of tank. the heavy-duty tanks carry a 5-year warranty, premium weight tanks carry a 3-year warranty and water tanks a 1-year warranty, from date of manufacture.

Hard Plumbing of any kind VOIDS TANK WARRANTY

It is important to NOT connect rigid piping onto the tank directly. The tank will slightly expand and contract due to temperature, pressure, or when liquids are being added or emptied out. These changes can cause trouble if the proper attachments are not added on in the correct locations. Problems that can occur from improper plumbing can cause the fitting or tank to leak, and in the worst case the tank to crack.

Over tightening of bands and straps can cause the same problems. In order to prevent this, don’t tighten the item so much that you can’t get it undone. Make sure it is snug.

There are some options that can be used to help with the plumbing issue. Flexible connections can allow that movement between the tank fitting and pump. The location most crucial for the flexible connectors is the lower third of the tank. When it comes to a polyethylene tank this is the area where the most movement occurs. If the side of the tank wall flexes with the flexible connections on, the hose will flex with that movement. A pipe will put extra pressure on the tank and could cause major problems.

Spring supports can be used under the pumps and valves to provide that support with the vibrations and movement. Just make sure they are designed to carry the weight of those valves and pump.

Expansion Joints A full faced flange should be used when using expansion joints. Expansion joints are used to isolate vibrations coming from the pumps and valves directly coming into contact with the tank and its fittings. If you are using an expansion joint, the pipe support needs to be placed after the flex. If an isolation valve is placed after an expansion joint, there is no way to stop the flow. If the isolation valve is placed before the expansion joint that will allow the flow to be stopped if there was a problem. There are different types of isolation valves that can be used in your setup.

Click here to download a full info sheet on our hard plumbing policy.

Yes, our above ground tanks and below ground cistern tanks are made from 100% virgin, food grade polyethylene resin that is material the FDA has approved as safe for potable water use. Keep in mind, when you’re storing potable water in a poly tank, it’s important to keep all the light out of your tank to prevent mold build up. Make sure you choose a tank with a lid that seals so it’s easy for you to keep it closed and your water in drinkable condition.
Good question. Make sure to pay attention to the specific gravity listed in your tank’s product description. Tanks that are listed as having 1.5-1.6 specific gravity are considered premium tanks and can hold liquids weighing up to 12.5 pounds per gallon. Heavy duty tanks with a specific gravity of 1.9 or higher can handle liquids weighing up to 15.8 pounds per gallon. Please note: If you store liquid chemicals that require a specific gravity higher than the tanks maximum capacity will void the warranty.
Polyethylene tanks can withstand temperatures up to 120 degrees Fahrenheit. However, they don’t have a minimum temperature rating. Storing liquids in your tank above this temperature can permanently weaken your tank. Keep in mind, liquids with low flash points cannot be stored in poly tanks. This is because of the 120 degrees F maximum allowable temperature in these tanks.
Even though there are a variety of chemicals you can store in your poly tank, since there are a vast amount of different chemical concentrates, we strongly encourage you to contact our expert salesperson to ensure the chemical you want to store is compatible with your tank.
The only tanks that can be buried are cistern and septic tanks. This is because they have ribbed walls that gives them structural integrity and will not collapse from the backfill procedure. Be aware, each state has its own legal regulations for installing septic tanks and it’s your responsibility to make sure you’re following the laws of your area for using this type of tank.
It is recommended that you properly install a concrete pad for any vertical tanks over 2,000 gallons.