Description
The Waterway 400-1990 1″S Union Nut with 1″ Slip Tailpiece and O-Ring is designed for Tiny Might Pumps, ensuring a secure and leak-free connection. This high-quality union nut features a 1” female buttress thread and a 1” slip tailpiece, making it easy to install and rotate 90 degrees for flexible positioning.
Waterway, a trusted name since 1987, delivers reliable water filtration solutions for long-term family health. Perfect for Tiny Might Pumps, this union nut comes with an O-ring for a tight seal and is sold individually or in sets of two for a complete assembly.
The Waterway 400-1990B is identical to the 400-1990 but comes in manufacturer-sealed packaging for added assurance. Its compact design and durable construction make it a must-have for pool and spa maintenance.
Ensure compatibility with your pump model before purchasing for optimal performance.






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