The Dielectric Union water heater is a high-quality fitting, featuring a 3/4-inch NPT x 3/4-inch connection. This union prevents galvanic corrosion by isolating dissimilar metals in plumbing systems, ensuring durability and optimal water heater performance. Compatible with Rheem water heaters, it offers a secure and efficient connection, making it an essential part for professional in... https://www.partshnc.com/ap13045-rheem-water-heater-dielectric-union-34-in-npt-x-34-in-tube