178575 | Pentair Bottom Bulkhead For Quad DE Filters

The Pentair Bottom Bulkhead 178575 is an OEM replacement part designed for use with Quad DE, Clean & Clear Plus, and FNS Plus filters. Serving as a crucial connection point, it maintains the structural integrity of the filter housing and ensures water passes through without leaks. Built to Pentair’s original specifications, this bulkhead helps preserve steady water flow and supports efficient filtration performance. Its durable design withstands the demanding conditions of pool and spa operation, making it essential for maintaining long-term reliability. Replacing a worn or damaged bulkhead with this OEM component ensures that your system continues to provide clean and balanced water.

Highlights

• Crucial System Component: The Pentair 178575 bottom bulkhead plays a vital role in filter performance, securing connections that allow water to move through the housing effectively and without loss.

• Broad Compatibility: Engineered to fit Pentair Quad DE, Clean & Clear Plus, and FNS Plus filters, this OEM part eliminates compatibility issues and ensures dependable operation across multiple filter series.

• Leak-Free Assurance: By maintaining a tight seal at the base of the filter body, the bulkhead prevents water seepage and supports steady pressure for consistent circulation.

• Supports Filtration Quality: A properly installed bulkhead preserves system flow rates, which directly contributes to better filtration efficiency and improved water clarity in both pools and spas.

• OEM Durability: Built to Pentair standards, the 178575 bulkhead is manufactured from strong, pool-grade materials that withstand daily use, helping extend the service life of the filter.

Includes

• (1) Pentair 178575 Bottom Bulkhead

Compatibility

• Pentair Quad DE Filters
• Pentair Clean and Clear Plus Filters
• Pentair FNS Plus Filter

Additional Info

Need help with the Pentair 178575 Bottom Bulkhead for Quad DE filters? This section covers installation tips, troubleshooting issues, and in-store availability so you can keep your Pentair filter system performing at its best.

Installing the Pentair 178575 Bulkhead

Learn how to properly install the bottom bulkhead to maintain a secure and leak-free connection in your Quad DE, FNS Plus, or Clean & Clear Plus filter.

How do I install the Pentair 178575 bulkhead in my Quad DE filter?

Can I buy the Pentair 178575 in-store at Discount Pool Mart?

Do I need special tools to replace the bottom bulkhead?

Should I use lubricant when installing the bulkhead O-ring?

Troubleshooting Filter Leaks and Performance

This section explains how to diagnose leaks and performance issues that may be caused by a worn or damaged bulkhead.

Why is my Pentair FNS Plus filter leaking at the bulkhead fitting?

Can a cracked 178575 bulkhead cause pressure loss?

How do I know if I should replace the bulkhead or the O-ring only?

Can staff in-store confirm if the bulkhead is the problem?

Finding the Right Part In Store

Ensure you’re purchasing the correct Pentair replacement bulkhead before leaving the store with compatibility checks.

How do I confirm the Pentair 178575 fits my Clean & Clear Plus filter?

Is the bottom bulkhead available for same-day pickup in-store?

Can Discount Pool Mart staff match the bulkhead to my filter model?

What other Pentair filter parts are stocked locally for quick purchase?

Diagram