071136Z | Pentair Purex & WhisperFlo Clamp Knob Hayward Super II Strainer Cover Lid Pentair 355301 Clear Lid –

Pentair 355301 Clear Lid – Monitor Basket Without Opening

ensures watertight seal between lid and filter body

(2) Mechanical Seal Carbon

which hayward impeller fits 1 hp sp3000 pump

071136Z | Pentair Purex & WhisperFlo Clamp Knob Hayward Super II Strainer Cover Lid Pentair 355301 Clear Lid –OEM Pentair Clamp Knob 071136Z is a replacement knob used to secure filter and pump lids on Pentair Purex SM SMBW 2000 and 4000 series filters and WhisperFlo pumps. Designed for equipment manufactured before 1998, this knob maintains a reliable seal to prevent leaks and preserve system pressure. It ensures proper lid compression to support consistent water flow and filtration performance. Built from durable materials, the knob withstands harsh pool