Waterway Plastics 400-5570 Union Pump End Assembly - 2 inch

What This Part Is Used For
The Waterway Plastics 400-5570 union pump end assembly is used to connect 2 inch plumbing directly to a pool or spa pump. It forms the pump-side portion of a union, allowing the pump to be disconnected without cutting pipe. This assembly is commonly found on circulation pumps where routine service or future replacement is expected. It plays a critical role in maintaining proper alignment between the pump and plumbing.

Why This Part Matters
Pump connections experience constant vibration, pressure, and thermal expansion. A worn or mismatched pump end assembly can introduce leaks, air intrusion, or stress on the pump housing. Using the correct union pump end ensures a proper seal and reduces strain on connected plumbing. This becomes especially important during pump upgrades or motor replacements.

Key Features and Specifications

• Manufacturer part number 400-5570
• Union pump end assembly
• 2 inch plumbing connection size
• Used at pool and spa pump inlet or outlet
• Designed for serviceable pump connections
• Interfaces with compatible union components
• OEM Waterway replacement part

Installation and Fitment Guidance
This pump end assembly installs directly onto the pump port and mates with the corresponding union tailpiece and nut. Installers typically verify gasket placement before tightening. Alignment should be checked prior to final assembly to avoid cross-threading or stress. Confirm by manufacturer part number before ordering.

About the Waterway Plastics Brand
Waterway Plastics is a trusted OEM supplier of pool and spa equipment components. Their pump connection parts are widely used by builders and service professionals. Waterway products are engineered for consistent fit and dependable long-term performance. The brand is known for producing service-friendly designs that simplify maintenance.

Common Service Context
This part is frequently encountered during pump replacements or motor upgrades. Technicians often identify it as the pump-side union interface when disconnecting equipment. It is commonly replaced when addressing leaks or updating older pump connections.