Eastman 60022 60022/DET-5 2 Gallon Expansion Tank, White The Eastman 60022 2-Gallon Thermal Expansion Tank provides a secure connection to water heaters that prevents dangerous build-ups of pressure. This water heater expansion tank stops hot water from backflowing into the cold water line and it also prevents hot water from escaping through the pressure relief valve and onto the floor. Constant fluctuations in water pressure can be dangerous and they can damage the water heater, properly installing a thermal expansion tank can solve all these issues. The thermal expansion tank has a high-quality butyl rubber diaphragm and 304 stainless steel fittings for long-lasting performance. This product comes factory pre-charged at 40 psi. It complies with Lead-Free Law. Features RELIABLE PROTECTION: Eastman thermal expansion tanks are designed with quality to prevent hot water from backflowing into the cold water line, they also avoid pressure build-ups that can be dangerous for your water heater DESIGN: This 2-gallon thermal expansion tank has a dimension of 12. 4-inches x 8. 3-inches and it's indicated for use in water heaters and boilers with a capacity of 30-gallons to 50-gallons FACTORY PRECHARGED: The expansion tank is factory precharged at 40 psi, this setting can be adjusted during installation to match the water pressure of your home DURABILITY: Manufactured with high-quality butyl rubber diaphragm and 304-stainless steel fittings for a long performance QUALITY: Eastman backs the unparalleled operation of this product with years of experience in manufacturing plumbing products CONNECTION: 3/4-inch MIP USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.