Pentair Black Manual Air Relief Assembly | SM & SMBW 4000 Series D.E. Filter, FNS Filter, Nautilus Plus Filter | 273550Z
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- Backordered: contact us for ETA
- SKU:
- 273550Z
-
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About This Item
OEM Replacement Manual Air Relief Assembly for Pentair D.E. and Cartridge Filters
The Pentair Black Manual Air Relief Assembly (273550Z) is the OEM replacement air relief assembly for the SM and SMBW 4000 Series D.E. Filter, FNS Filter, and Nautilus Plus Filter product lines.
IMPORTANT: CONFIRM COLOR BEFORE ORDERING
This is the BLACK version of the air relief assembly. Pentair produces this assembly in multiple color variants for different filter configurations. Confirm the color on your existing assembly matches Black (273550Z) before ordering — the wrong color variant may not seat correctly in your filter's air relief port.
The manual air relief assembly allows trapped air to be purged from the filter tank before and after servicing, restoring proper water flow and system pressure. A failed or leaking air relief assembly can prevent accurate pressure readings and allow air locks to develop within the filter, reducing filtration efficiency.
Specifications
| Pentair Part Number | 273550Z |
| Color | Black |
| Quantity Included | 1 Assembly |
Pro Tip
Before ordering, locate the existing air relief assembly on your filter and confirm the color matches Black (273550Z). Pentair supplies this assembly in multiple color variants corresponding to different filter configurations — ordering the wrong color variant may result in a part that does not seat correctly in your filter's air relief port. If you are unsure of your filter's model number, it is stamped on the filter tank label.
