Pentair Bottom Locking Flange for Dynamic Filter Series II, III & IV Filters | R172370
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- Backordered: contact us for ETA
- SKU:
- R172370
-
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About This Item
The Pentair Bottom Locking Flange (R172370) is the OEM replacement flange for the Dynamic Series II, III, and IV cartridge filter lines, including the RTL, RCF, and DFML filter models.
The bottom locking flange secures the filter tank assembly at its base, maintaining a sealed, pressure-stable connection between the lower tank body and the filter housing. A failed or cracked flange compromises the structural integrity of the filter tank, leading to leaks at the base of the unit. Replacing it with the correct OEM component restores a proper seal and ensures the filter operates within its designed pressure parameters.
Specifications
| Pentair Part Number | R172370 |
| Part Name | Bottom Locking Flange |
| Quantity Included | 1 (Each) |
| Dimensions |
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Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | Dynamic Filter Series II & III | RTL | Top Load In Line Cartridge Filter |
| Pentair | Dynamic Filter Series II & III | RCF | Top Load In Line Cartridge Filter |
| Pentair | Dynamic Filter Series IV | DFML | DFML 25C, 25, 35, 50 Lily Pad Skim Filter |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Pro Tip
Before ordering, check the part number stamped or molded on your existing flange — Dynamic Series II, III, and IV filters share similar housing designs, and confirming R172370 against the original component is the most reliable way to ensure correct fitment. While the filter is disassembled for this repair, inspect the tank O-rings and any associated sealing surfaces for wear and replace them at the same time to avoid a repeat service call.
