Swimables Air Relief Valve & Pressure Gauge for Pentair Pool Filters — Compatible with FNS/Clean & Clear/2000‑4000 Series, Thread‑

Swimables 98209800 air relief valve is a direct-replacement pressure relief and gauge kit compatible with Pentair FNS, Clean and Clear, Quad DE and 2000/4000-series pool filters.

When air accumulates in a pool filter, it reduces circulation and raises pressure; this Swimables replacement valve and pressure gauge assembly restores proper venting and helps keep filtration running smoothly. The kit is designed to match Pentair reference numbers and common filter models so you can replace a worn or leaking valve without modifying the tank or plumbing.

How will this valve restore my filter’s performance?

Replacing a faulty air relief valve restores the filter’s ability to purge trapped air, reducing pressure spikes and improving pump efficiency. The included pressure gauge lets you monitor operating pressure at a glance so you can tell when backwashing or cleaning is required.

• Restores proper air venting for full water flow
• Built to fit original Pentair valve ports and threads
• Pressure gauge provides visible operating-range feedback
• Helps prevent cavitation and unnecessary pump strain

Which Pentair filter models and part numbers is this compatible with?

This Swimables assembly was manufactured to match a wide set of Pentair filters and part numbers so it fits directly where the OEM valve did. It covers FNS/FNS Plus tanks, Clean and Clear variants, Quad DE 60–100, Predator series and classic 2000/4000-series housings.

• Compatible with FNS, FNS Plus, SMBW 2000/4000 Series filters
• Works on Clean and Clear: CCP100, CCP320, CCP420, CCP520
• Fits Quad DE 60, 80, 100 and Predator filter models
• Interchangeable with Pentair numbers listed in product specs

How easy is installation and routine use?

Installation is straightforward: unscrew the old valve and gauge, apply Teflon tape to the threads and thread the Swimables assembly into place. To vent air, simply turn the valve until air releases, then close it once water appears; the gauge stays readable for quick checks.

• Thread-on replacement — no special tools beyond tape and wrench
• Operate valve by hand for quick air release
• Gauge mounts in the same position as original Pentair parts
• Complete kit reduces extra parts hunting

What should I check after installing this replacement valve?

After installation, check for leaks around the threaded joint and confirm the gauge reads within normal operating range when the pump runs. Monitor the filter for the next few cycles to ensure pressure stabilizes and the valve reliably vents trapped air.

• Inspect threads for a watertight seal — reapply Teflon if needed
• Start pump and observe gauge pressure and flow
• Cycle the valve to confirm air release and resealing
• Recheck after a day of operation to ensure stability

Who is this for: Pool owners, service techs and DIY maintainers with Pentair-compatible filters who need a reliable replacement for a leaking, stuck or missing air relief valve. If your filter is part of the FNS family, Clean and Clear series, Quad DE units, or 2000/4000-series tanks and you want a direct-fit pressure relief and gauge kit without modifying the system, this Swimables assembly is built to match OEM fit and function while making maintenance faster and easier.