Waterway Plastics DE Manifold Assembly

Waterway Plastics D.E. Manifold Assembly

Waterway Plastics 550-4200 is a DE manifold assembly with air relief. This part serves as the central junction in a diatomaceous earth filtration loop, directing flow to the filter grid while venting trapped air. It is designed for technicians and professional buyers assembling or servicing DE filtration plumbing in pools and spas.

Key Features

• Provides a dedicated connection point for DE filtration manifolds and air relief line, enabling reliable venting.
• Routes water to the DE grid during filtration and backwash cycles, supporting even distribution.
• 550-4200 designator referenced in documentation for easy identification.
• Compact manifold layout minimizes orientation sensitivity during installation.
• Designed to integrate with standard DE filter housings and plumbing in pool and spa systems.

Where This Part Is Used

In typical pool and spa installations, this part sits inside the filter housing as part of the DE filtration manifold. It appears in filter assemblies that route water from the pump wet end through the DE grid and back via the return lines. You will find it connected to DE filter plumbing and skimmer assemblies and to the main return lines in many filter configurations. Its air relief functionality helps vent air during initial start-up and backwash, supporting steady flow and consistent filtration. By integrating with the filter housing and bypass lines, it supports the overall operation of the DE filtration loop.

Why Choose Waterway Plastics

Waterway Plastics has a long history of engineering precision in pool and spa components. The company’s DE manifolds reflect consistent design language across products, which translates to straightforward installation and interchangeability within the Waterway family. Durable construction and straightforward serviceability help technicians maintain filtration loops with minimal downtime. Choosing Waterway Plastics means relying on a brand known for reliable performance and long-term support in professional settings.