20 Years of Trouble-Free Performance: Building Lasting Drains for Floating Roof Tanks
Tank operators frequently face short-lived drainage solutions that wear out under exposure to harsh chemicals, shifting roof movement, and environmental stress – resulting in frequent replacements and unscheduled downtime.

The Challenge of Traditional Roof Drain Systems
Aboveground storage tanks (ASTs) with floating roofs are essential for storing volatile liquids like gasoline, jet fuel, and chemicals. However, these tanks often encounter issues with traditional drainage systems:
- Chemical degradation: Exposure to aggressive chemicals can corrode materials, leading to leaks and failures.
- Physical wear: Some drain systems require joints and piping that can put an additional load on your floating roof and seals, causing unnecessary wear or damage.
Maintenance challenges: Multiple connection points can cause mechanical failures, drastically increasing the potential for emissions leaks.
These challenges highlight the need for a durable, low-maintenance drainage solution.
Introducing Resist-All-Clad®: A Durable Solution
Mesa ETP’s Resist-All-Clad® flexible floating roof drain system is engineered to address these challenges, offering:
- Chemical and pH resistance: Compatible with a wide range of substances, including MTBE, aromatic hydrocarbons, alcohols, gasoline, and jet fuels.
- Seamless construction: Manufactured in a single continuous length, eliminating joints that can be weak points.
- Long service life: Proven to last over 20 years when properly sized, installed, and maintained.
These features ensure that Resist-All-Clad® provides reliable performance in demanding environments.
Key Features and Benefits
1. Smooth Internal Fluidway
The drain’s smooth internal surface facilitates fast flow rates and efficient drainage, reducing the risk of sediment buildup and flow-restricting turbulence.
2. Full-Flow Fittings
Equipped with steel fittings coated with thick nylon inside and out to prevent corrosion and minimize wear. Floating 150 lb. ANSI raised face flanges are standard, with all-stainless steel hardware available for high pH applications.
3. Negative Buoyancy
Designed with negative buoyancy, Resist-All-Clad® remains securely positioned in the tank, even when dealing with a wide range of products from light chemicals to heavy crude oil.
4. Multiple-Coil Design
Features a multiple-coil configuration that provides a preformed, controlled, and repetitive lay pattern, ensuring the drain stays in place and does not slide on the tank floor.
5. Custom Engineering
Each system is tailored to the specific dimensions and requirements of the tank, ensuring optimal performance and longevity.
Proven Longevity and Reliability
Resist-All-Clad® has been historically proven to last over 20 years when properly sized, installed, and operated. This longevity translates to reduced maintenance costs, fewer operational disruptions, and a lower total cost of ownership.
Learn More About Resist-All-Clad®
For more information on how Resist-All-Clad® can enhance the durability and efficiency of your floating roof tank drainage system, visit the Mesa ETP Resist-All-Clad® product page.
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