Our Compliance Partners

Potable Water Tank Lining & Repair

Providing up to 1965 PSI adhesion strength, AmTech’s DuraChem® 500 series Polylining system is the backbone of potable water tank lining and repair systems.

Lining systems for bolted steel, welded steel, and concrete tanks used for potable water storage are unique in as much as they need to meet standards like NSF and ANSI 61, as well as have good bonding strength and staying power. AmTech offers several potable water tank repair and lining systems, such as HydraStone for hot water tank lining, the Port Seal Crystalline method for waterproofing concrete water tanks, and BiFlex FRP systems for fiberglass water tank lining and other laminate systems. The DuraChem® 500 series Polylining system is the backbone of AmTech’s potable tank lining and repair systems, allowing quick service with minimal downtime for most general use in potable water storage tanks.


Using DuraChem® 500 series for Potable Water Tank Lining

DuraChem® 500 series is an optimal potable water tank liner because it adapts well to concrete tanks, and bolted and welded steel tanks, and has flex and elongation characteristics that far surpass other, older coating technologies. Changes in air temperature, solar heating, and wind deflection can cause tank’s to expand and contract. The DuraChem® 500 series can flex, bend and stretch to adjust for these dynamic changes without disbonding from its tank wall substrate, a major factor causing failure in older thin mil coatings like epoxy.

DuraChem® 500 series potable water tank linings are installed with high-temperature, high-pressure spray-up application, with no VOCs. The cure time is just a matter of minutes, allowing quick application and return to service with minimal downtime. When the substrate is properly prepared, the molecular bond created, coupled with the mechanical tooth and suction bond, gives this system up to a 1965 PSI adhesion strength. This 80 to 125 mil monolithic shell has been referred to as Tupperware for Tanks by industry professionals.

Substrate preparation is the first step in potable water tank lining. AmTech’s crews are trained to repair steel and concrete tank problems that may be uncovered during this process. Where tank structure conditions are unknown, our field engineering group offers NDT survey services for tanks that may be in question. Old linings can be inspected and tested, and ultrasonic studies of tank wall thickness can be performed.

Potable water tank lining
This Tank’s Thin Mil Coating is Compromised

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Frequently Asked Questions About Potable Water Tank Lining

What Materials are Used for Potable Tank Lining?

The materials used for potable water tank lining may include epoxy, polyurethane, polypropylene and polyethylene. Any materials used must be NSF and ANSI 61 approved to ensure they are safe for use with drinking. AmTech’s ANSI 61 compliant DuraChem® 500 series Polylining creates a long lasting “tank within a tank.” DuraChem’s cross linked polymers form a monolithic shell that prevents the water contained from reaching and corroding the tank’s walls.

What Types of Tanks Can Use Potable Tank Lining?

Almost any type of tank used for storing drinking water can use potable tank lining, including concrete, steel, and fiberglass tanks.

Why is Potable Tank Lining Important?

Potable water tank lining is important because it helps prevent the contamination of drinking water by protecting the tank from corrosion and other types of damage. A properly applied lining, helps protect public health by ensuring that the water stored in the tank is safe for consumption. Lining can also greatly extend the useful life of potable water tanks by shielding their interior walls from corrosion.

AmTech offers the best warranty program in the business. For a no-obligation project evaluation and lining sample, please call our Customer Service Engineering Department at 888-839-0373 or contact us today.

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