The SW‑26‑900 assembly integrates a high‑flow air relief valve and a built‑in pressure gauge, offering precise air management and pressure monitoring for Pentair‑style filters. This durable unit helps ensure safe, efficient operation and water clarity in cartridge, DE, and multi‑media systems.

Key Features:

• High‑Flow Manual Air Relief Valve: Quickly expels trapped air to prevent pressure build‑up and maintain even water flow 

• Integrated Pressure Gauge (0–60 psi): Provides accurate readings to help determine when filters need cleaning or when pressure is too high

• Secure O‑Ring Seal: Ensures leak‑free installation and maintains optimal pressure integrity 

• Robust Construction: Built for long-term use and resistance to pool chemical exposure 

• Factory-Style Replacement: Direct substitute for OEM Pentair part 98209800 

• Wide Compatibility: Works with Pentair Quad DE, FullFloXF (C/F/F4 Series), Clean & Clear (including RP), FNS Plus, SMBW, Predator, and some cartridge filters 

• Clip Included: Handy plastic clip holds the assembly securely in place on filter tanks 

• Tool-Free Installation: Installs easily by hand using standard thread seal tape—no tools required

Product Overview:
The SW‑26‑900 Pentair‑style air relief valve assembly with pressure gauge is a vital addition for any pool filtration setup requiring reliable air management and pressure monitoring. By combining a high‑flow valve and a 0–60 psi gauge, this assembly ensures trapped air is safely released and warns you when filter cleaning or maintenance is needed.

Asset-backed as a direct replacement for OEM part 98209800, this assembly includes the valve, gauge, O‑ring, and securing clip. Its durable build resists corrosion and chemical wear. Designed for universal compatibility, it fits a broad range of Pentair systems—Quad DE, FNS Plus, FullFloXF, Clean & Clear, SMBW, Predator, and select cartridge filters.

Installation is simple and tool-free: use thread seal tape and hand-tighten into the filter’s top port. The included clip ensures the assembly stays securely on the tank. Users routinely report fast, easy replacements:

“This filter air relief valve assembly includes gauge, makes filter maintenance straightforward.” 

“It fits Pentair FNS Plus, Quad DE, Clean & Clear … includes O‑ring and gauge.” 

In summary, the SW‑26‑900 ensures your pool filtration system operates smoothly with efficient air relief and precise pressure monitoring—vital for maintaining equipment longevity and clean pool water.