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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071407 | Pentair Purex CF Hex Nut
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
The Pentair 071407 Purex CF Hex Nut is a heavy-duty replacement fastener used on Pentair/Purex CF-series cartridge filters, securing the filter lid and maintaining a tight, pressure-rated seal. This hex nut is engineered from corrosion-resistant material to withstand constant exposure to pool chemicals, moisture, and outdoor environments. It provides the clamping strength needed to keep the tank top locked in place during operation, preventing leaks and ensuring the filter maintains proper internal pressure. Ideal for replacing stripped, rusted, or worn hardware, the 071407 nut restores safe and reliable fastening for continued filtration performance.
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Exact Fit for Purex CF Filters: Designed to match the original hardware used on Pentair/Purex CF-series cartridge filters, ensuring proper alignment and secure lid fastening.
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Restores Seal Integrity: Replacing worn or damaged nuts improves the filter’s ability to hold pressure and maintain a leak-free top-tank seal during operation.
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Chemically Resistant Construction: Built from materials that resist rust, corrosion, and chemical degradation caused by chlorinated or saltwater pool environments.
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Maintains Safe Operating Pressure: Provides the necessary clamping force to keep the tank lid firmly locked, supporting safe filtration and protecting internal components.
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Ideal for Service & Rebuilds: A simple but essential replacement part that ensures long-term reliability when refurbishing older Pentair/Purex CF filter systems.