Waterway 640-4790V Grate & Frame – 9″ × 9″
The Waterway 640-4790V is a square pool main drain or suction outlet cover featuring a 9″ × 9″ grate mounted in a 10.375″ × 10.375″ frame. It is designed for in-ground pool systems requiring a durable, high-flow drain cover with a clean, finished look.
Key Features
- Square grate and frame sized for 9″ × 9″ suction outlets.
- High open-area design to support strong flow rates in residential or commercial pools.
- Durable construction suitable for gunite, concrete and similar in-ground pool structures.
- OEM-style replacement for maintaining safety and proper water movement.
Technical Specifications
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Part Number: 640-4790V
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Grate Opening Size: 9″ × 9″
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Frame Dimension: 10.375″ × 10.375″
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Open Area: Approximately 43.6 square inches
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Application: Main drain or suction outlet cover for in-ground pool systems
Installation & Compatibility Notes
Shut off the pool pump and remove the existing cover. Inspect the mounting area for clean and level seating. Position the new frame, secure it with the appropriate hardware, and snap or screw the grate into place. Confirm that the cover sits flush and has no play. Restore circulation and verify proper operation.
Maintenance Tips
- Check the grate yearly for cracks, deformation or loose hardware.
- Ensure mounting screws remain tight and free of corrosion.
- Replace immediately if damage is found to maintain safety and flow performance.
Why Choose This Drain Cover?
The Waterway 640-4790V provides a reliable and durable replacement for square main drain openings, delivering strong flow capacity and long-term durability. Its straightforward installation and sturdy design make it a dependable choice for pool professionals and homeowners.
