Waterway Plastics Manifold Assembly

No, this specific part (550-4200) is designed exclusively for Waterway Crystal Water Diatomaceous Earth (DE) filters. It is not compatible with cartridge or sand filter models.

You should consider replacing the manifold if you notice cracks in the plastic housing, if the air relief valve is no longer seating properly, or if you see DE powder returning to your pool, which often indicates a compromised internal seal.

This assembly is typically sold as the manifold unit itself. We recommend inspecting your existing O-rings during installation and replacing them if they show signs of wear or dry rot to ensure a watertight seal.

Yes, this is a straightforward replacement for most pool owners. You will need to disassemble the filter tank, remove the old manifold, and ensure the DE grids are properly seated in the new assembly before reassembling the tank.

The manifold acts as the collection point for filtered water. It gathers the clean water from the individual DE grids and directs it back into your pool, making it a critical component for maintaining proper flow and filtration efficiency.