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The HAYWARD 404200925001 is a white upper sump designed as an OEM-style replacement for the RXD 300 Series main drain system. The upper sump forms the structural and hydraulic connection between the pool floor plumbing and the drain cover assembly, directing flow through the drain and maintaining a watertight interface. Constructed from UV-resistant white plastic, this component is built to withstand continuous submersion and pool chemical exposure. It is installed by licensed pool service technicians during routine drain maintenance, safety upgrades, or VGB compliance work.
This upper sump is intended for use with Hayward RXD 300 Series main drain assemblies in residential and commercial pool applications. It is a direct OEM replacement, making it suitable for contractors performing drain cover compliance upgrades or replacing worn sump components as part of routine pool service. Its white finish matches standard drain assembly aesthetics for RXD 300 installations.
Designed as an OEM replacement for the Hayward RXD 300 Series main drain system.
Installation should be performed by a qualified pool service technician. Shut off all circulation pumps and isolate the pool plumbing before beginning drain sump replacement. Verify that the replacement sump seats fully and that the drain cover fastens securely per VGB anti-entrapment requirements before returning the system to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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