172855 | Pentair Nautilus Plus & FNS DE Filters Air Vent Strainer | 3/4"

OEM Pentair Air Vent Strainer 172855 is a 3/4-inch stainless steel replacement component designed for Pentair Nautilus Plus and FNS D.E. pool and spa filters. This strainer serves as a crucial barrier that prevents debris from entering the air valve tube, helping to protect internal components and preserve system performance. Its corrosion-resistant stainless steel construction ensures long-lasting durability even under constant exposure to pool chemicals and water pressure. By maintaining clean air flow through the relief vent, the strainer supports consistent filtration and system safety. Installation is straightforward, offering a drop-in solution for maintaining your filter’s reliability.

Highlights

• Corrosion-Resistant Construction: Fabricated from 3/4-inch stainless steel, the Pentair 172855 strainer is engineered for maximum durability and resistance to chemical and environmental degradation in pool environments.

• Protects Air Valve Tube: Acts as a defense barrier against debris intrusion, helping to preserve the integrity of the air valve tube and prevent blockages that can disrupt filtration or cause system wear.

• Maintains Uninterrupted Air Flow: Ensures the air relief vent remains clear of obstructions, facilitating proper pressure release and maintaining balanced operation across the filtration system.

• OEM-Designed Fit: Precision-built for use with Pentair Nautilus Plus and FNS series filters, this strainer installs directly without modification, streamlining replacement and ongoing maintenance.

• Critical for System Longevity: Prevents small debris from entering sensitive air flow channels, supporting sustained performance and reducing maintenance frequency over time.

Includes

• (1) Pentair 172855 Air Vent Strainer

Compatibility

• Pentair Nautilus Plus DE Filters
• Pentair FNS DE Filters

Additional Info

Replacing the Pentair 172855 Air Vent Strainer? This section covers in-store availability, installation tips, and common debris prevention questions for Nautilus Plus and FNS D.E. filters.

Local Purchase and Install

Helpful tips for buying the strainer in store and installing it easily on your existing Pentair system.

Can I buy the Pentair 172855 strainer in store today for my Nautilus filter?

How do I install the 172855 air vent strainer after walk-in purchase?

Does the in-store 172855 fit both Nautilus Plus and FNS filters?

Preventing Debris and Ensuring Safety

Learn how the strainer protects your system from clogs and performance loss.

How does the 172855 prevent debris from entering the air valve tube?

What happens if I don’t replace a missing air vent strainer on my FNS filter?

Can debris damage the air relief valve if the strainer is broken?

Maintenance Tips After Local Install

Covers when to inspect and replace the strainer for optimal performance.

How often should I check the 172855 strainer after walk-in installation?

What are signs that the 172855 needs replacement or cleaning?

Can I remove and reuse the strainer during filter servicing?

Diagram