Waterway Plastics 400-5670 Union Assembly with O-Ring Rib Gasket - 2 inch Half Union

What This Part Is Used For
The Waterway Plastics 400-5670 union assembly is used to create a serviceable connection in pool and spa plumbing systems. This half union includes an integrated O-Ring rib gasket to provide a secure seal. It allows equipment to be disconnected without cutting plumbing. This assembly is commonly used on pumps, filters, and other service points.

Why This Part Matters
Service unions are critical for maintenance and equipment replacement. A damaged union or gasket can cause leaks or make future service difficult. The ribbed O-Ring design helps maintain consistent compression. Using the correct OEM union assembly ensures proper alignment and sealing.

Key Features and Specifications

• Manufacturer part number 400-5670
• Half union assembly
• 2 inch plumbing size
• Includes O-Ring rib gasket
• Used in pool and spa plumbing systems
• Provides serviceable equipment connection
• OEM Waterway Plastics component

Installation and Fitment Guidance
This half union is solvent welded to plumbing and mates with a corresponding union nut. Installers ensure the O-Ring is properly seated before tightening. Hand tightening is typically sufficient. Confirm by manufacturer part number before ordering.

About the Waterway Plastics Brand
Waterway Plastics manufactures plumbing components used throughout pool and spa systems. Their union assemblies are designed for ease of service and long-term reliability. Professionals rely on Waterway for consistent fit. The brand supports efficient system maintenance.

Common Service Context
This union is encountered during pump or filter replacement. Technicians inspect it when leaks appear at equipment connections. It is commonly replaced when threads or sealing surfaces wear.