The Waterway 415-6000 union nut is designed for compatible 2-1/2 inch union applications. A union nut like this is useful because it secures the serviceable plumbing connection while still allowing the union to be separated when maintenance or equipment replacement is needed.Larger union nuts can be especially important to match correctly because they affect both connection security and the ease of future service. Replacing a damaged or worn Waterway union nut can help restore confidence in the assembly without requiring every surrounding part to be replaced.For compatible plumbing service and replacement work, this Waterway union nut is a practical option when restoring a 2-1/2 inch union connection. Waterway 2-1/2 inch union nut Designed for compatible union assemblies Helps secure and complete the serviceable connection Useful for repair and maintenance work Supports cleaner and more dependable reassembly