Pentair Black Union Nut 2-1/2" | WhisperFlo XF / IntelliFlo XF Pump | 411000Z Throw Ropes confirm the color of the

confirm the color of the ring currently installed in your bubbler

Replacing this O-ring at service intervals maintains a watertight seal and protects the light assembly

you will also need the companion partial grid: Unicel PG-1904 Partial DE Filter Grid

The packing ring set forms a compression seal around the impeller shaft

5HP Uprated motor configurations

Pentair Black Union Nut 2-1/2" | WhisperFlo XF / IntelliFlo XF Pump | 411000Z Throw Ropes confirm the color of theThe Pentair 411000Z is the OEM replacement 2 1 2" union nut for the WhisperFlo XF and IntelliFlo XF Variable Speed Pumps, finished in black. What It Does This union nut secures the pump union connection, maintaining a leak free seal between the pump and plumbing. A cracked, stripped, or missing union nut compromises the union joint, leading to leaks at the pump inlet or outlet. Replacing it with the correct OEM part restores a proper, pressure rated