The Rheem RRT-25 Therm-X-Guard Expansion Tank is a 10-gallon tank designed to manage pressure in your plumbing system. Made from high-quality materials, this expansion tank complies with industry standards for safety and performance. Its robust design allows for easy installation in various systems, making it suitable for both residential and commercial applications. The tank effectively absorbs excess pressure, protecting your water heater and plumbing fixtures from damage. Ideal for use with Rheem water heaters, this expansion tank is essential for maintaining system efficiency and longevity.