The Pentair 071136Z clamp knob is a genuine factory replacement designed to fasten filter and pump lids on Pentair Purex SM/SMBW 2000 and 4000 series filters as well as WhisperFlo pumps manufactured before 1998. This knob applies even compression to the lid, holding the gasket firmly in place to create a pressure-tight seal that guards against air leaks and water loss. Crafted from tough, pool-rated materials, it withstands constant exposure to sanitizing chemicals, direct sunlight, and the mechanical stresses of repeated tightening cycles. For anyone maintaining legacy Pentair equipment, this knob is a small but essential part that keeps the entire filtration or pumping system running at full capacity.

Key Benefits

• Engineered for Pre-1998 Pentair Equipment: Precision-sized for legacy WhisperFlo pumps and Purex SM/SMBW filter lines, covering both the 2000 and 4000 series platforms.
• Locks Down Lids Tight: Provides the clamping force needed to seat filter and pump covers securely, eliminating vacuum leaks and preserving internal system pressure.
• Even Gasket Compression: Distributes pressure uniformly across the lid seal, preventing uneven wear and ensuring a consistent, gap-free fit around the entire perimeter.
• Resists Chemical and UV Damage: Produced from robust compounds that tolerate chlorine, bromine, salt, ultraviolet light, and repeated mechanical use without cracking or stripping.
• Keeps Legacy Systems Running Strong: Restores original clamping performance on older Pentair units, allowing continued safe operation and extending the useful life of proven equipment.

What's Included

• Pentair 071136Z Knob

Compatibility

• Pentair Purex SM 2000 Series Filters
• Pentair Purex SMBW 2000 Series Filters
• Pentair Purex SM 4000 Series Filters
• Pentair Purex SMBW 4000 Series Filters
• Pentair WhisperFlo Pumps
• Pentair Nautilus Plus Filters

Specifications

• Brand: Pentair
• Part Number: 071136Z

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