Waterway 400-3090 Self-Aligning Union AssemblyThe Waterway 400 3090 is a self aligning union assembly, characterized by a 1 1 2" slip x 1 1 2" slip configuration. It is crafted from white PVC, making it suitable for durable pool and spa plumbing applications. This union assembly is compatible with various Waterway systems that require a 1 1 2" connection and is typically used for ease of maintenance and installation in these setups.