Pentair Black Union Nut 2-1/2" | WhisperFlo XF / IntelliFlo XF Pump | 411000Z F004AB (Open Line) W3C4030 Hayward SwimClear

(Open Line) W3C4030 Hayward SwimClear C4000 Hayward SwimClear C4020 Hayward SwimClear C4025 Compatibility is based on Hayward parts documentation and available OEM records

Compatible with chlorine

directing filtered water back into the pool

Stop Algae Before It Starts – Protect Your Spa Investment

Pentair Black Union Nut 2-1/2" | WhisperFlo XF / IntelliFlo XF Pump | 411000Z F004AB (Open Line) W3C4030 Hayward SwimClearThe 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