Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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Waterway 550-7500 Filter Lock Nut | For ClearWater II Filters
Fits these models (2)
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
OEM Waterway 550-7500 Filter Lock Nut is a direct replacement part for securing lids on Waterway ClearWater II cartridge and D.E. filters. This lock nut is vital for creating a pressure-tight seal, preventing water leaks and preserving the system’s filtration efficiency. Built from highly durable materials, it withstands constant exposure to pool chemicals and daily use. Its OEM-grade construction guarantees reliable performance, making it a key maintenance component for extending the life of your ClearWater II filter setup.
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Designed for ClearWater II Systems: Made to fit Waterway ClearWater II DE and cartridge filters, offering seamless installation and OEM reliability.
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Maintains a Leak-Free Seal: Crucial for keeping the filter lid tightly closed to avoid air or water leaks that can reduce filtration effectiveness.
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Chemical-Resistant and Durable: Engineered from strong materials built to endure chlorine exposure and operational pressure fluctuations.
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Supports Ongoing Filter Operation: Replaces worn components to help your filtration system maintain consistent performance and water clarity.
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Critical for Safe Pool Filtration: A necessary part to ensure your system meets pressure retention and safety standards during operation.
- (1) Waterway 550-7500 Lock Nut
- Waterway ClearWater II Cartridge Filters
- Waterway ClearWater II DE Filters
- Bottom Outside Diameter: 17"
- Bottom Inside Diameter: 17-5/8"
- Top Diameter: 16"
- Entire Diameter: 20-3/8"
Note: See product pictures for a visual of the dimensions
