Pentair 071136Z Clamp Knob | Purex & WhisperFlo

OEM Pentair Clamp Knob 071136Z is an essential replacement part for sealing pump and filter lids on older Pentair systems, including Purex SM/SMBW 2000–4000 series filters and WhisperFlo pumps. Ideal for equipment manufactured prior to 1998, this knob helps create a secure lid seal to prevent leaks and pressure loss. Its durable construction withstands repeated tightening and pool chemical exposure, ensuring reliable system operation over time. This component helps extend the service life of legacy filtration and circulation systems.

Highlights

• Fits Legacy Pentair Models: Designed for use with WhisperFlo pumps and Purex SM/SMBW filters made before 1998 for accurate system compatibility.

• Secures Pump and Filter Lids: Delivers consistent sealing pressure to keep lids closed and prevent leaks or suction loss.

• Protects Internal Operation: Maintains system integrity by securing the housing, helping pumps and filters operate efficiently.

• Durable OEM Construction: Built from strong, corrosion-resistant materials suited for long-term outdoor and chemical exposure.

• Supports System Maintenance: A simple, effective replacement for aging clamp knobs to maintain safe, sealed pool operation.

Includes

• (1) 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

Additional Info

Have an older Pentair pump or filter system? This section breaks down how the 071136Z clamp knob fits legacy models and how to check local pricing and inventory before heading to your nearest shop.

Confirming Compatibility with Legacy Filters

The 071136Z knob is built for Purex SM/SMBW 2000 & 4000 filters and WhisperFlo pumps made before 1998. It secures the lid to ensure leak-free performance.

Will this clamp knob fit my 1996 Purex filter system?

Can I check local price and availability before visiting the store?

How do I know if my system uses the pre-1998 knob design?

Is this part compatible with older Nautilus Plus filters too?

Can I bring in my old knob to match threads and shape?

Fixing Leaks and Loose Lids

A failing clamp knob can result in slow leaks or noisy operation. Learn the warning signs and why this small part makes a big difference.

What causes the filter lid to pop open under pressure?

Could a stripped knob thread lead to system failure?

Why is water dripping from the clamp ring area?

How often should I replace the clamp knob for safety?

Will this part fix a vibrating pump lid issue?

Checking Local Availability Before You Go

Because this part supports legacy systems, it’s important to call ahead to verify stock at Wholesale Pool Mart and avoid delays.

What local pool shops carry the 071136Z clamp knob?

Can I confirm this part is in stock near me?

Is this part sold separately or with the clamp assembly?

Will staff help match it to my system specs on-site?

Does Wholesale Pool Mart offer older Pentair parts for repair?

Diagram