9GA 4.5 Gallon Thermal Expansion Tank for Potable Water Systems

The 9GA 4.5 Gallon Thermal Expansion Tank by Zurn Wilkins offers a trusted solution for managing pressure fluctuations in potable water heating systems. Designed for residential and light commercial use, this compact tank efficiently absorbs excess water pressure caused by thermal expansion, protecting plumbing systems and water heaters from potential damage.

• Capacity: Holds 4.5 gallons, ideal for typical residential and small commercial thermal expansion needs.
• Durable Construction: Made from robust steel with a high-quality butyl diaphragm that separates air and water, preventing internal corrosion.
• Compact Design: Sized to fit easily in tight spaces near water heaters without extensive modifications.
• Pre-Charged for Convenience: Factory pre-charged to integrate seamlessly with your system right out of the box.
• Corrosion Resistance: Protected by internal and external coatings that resist rust, extending the lifespan of the tank.
• Standard Connection: Features a 3/4-inch NPT inlet compatible with most residential and light commercial plumbing configurations.
• Code Compliance: Meets industry standards and local plumbing codes requiring pressure control in closed potable water systems.

By controlling pressure caused by heated water expansion, this thermal expansion tank minimizes stress on pipes, valves, and fixtures, reducing the risk of leaks and premature system failures. Its durable materials and corrosion-resistant coatings ensure long-lasting performance, making it a reliable choice for new installations or retrofitting existing systems. Installing this tank helps maintain water heater efficiency, prolong system life, and ensures compliance with safety regulations—providing peace of mind for homeowners, plumbers, and facility managers alike.