Swimables Pentair-Style Air Relief Valve

Key Fit

• Pentair-Style Manual Air Relief Valve – Designed to release trapped air from pool filters during startup

• Manufacturer Reference 98209803 – Match the installed filter’s parts diagram and manual air-relief assembly before ordering

• Manual Air Venting – Releases trapped filter air when operated according to the filter instructions

• Restores Proper Startup Performance – Allows air to vent so water can fully fill the filter tank

• Direct Replacement Design (SW-26-908) – Aftermarket Swimables valve engineered to match OEM fit and function

• Service Procedure – Turn off power and release all pressure before removal; follow the exact filter manual

• Replace When Valve Fails – Recommended if leaking, cracked, hard to operate, or no longer venting air properly

Swimables SW-26-908 is an aftermarket Pentair-style manual air-relief valve referenced by the manufacturer to 98209803. Match the valve to the installed filter diagram and assembly.

This valve is operated manually to vent trapped air. It is not an automatic pressure regulator or a guarantee against overpressure. Follow the filter’s operating limits and startup procedure.

Use this replacement only where the filter diagram and installed assembly call for the matching valve reference. Inspect leaking or damaged relief components before restarting the system.

How Air Relief Affects Pool Filter Safety and Performance

Air may need venting after filter service or startup. Use the installed filter’s prescribed manual air-release and startup procedure.

Follow the filter manual to vent air and close the manual valve at the specified point. Stand clear during startup and stop the pump if venting or sealing is abnormal.

Correct venting is one part of filter operation. A replacement valve does not waive the filter’s pressure limits, inspection requirements or assembly instructions.

Designed for Pentair-Style Pool Filters

Swimables pairs SW-26-908 with Pentair-style reference 98209803. Check the exact model diagram rather than assuming every FNS Plus, Quad DE or Clean & Clear version uses the same assembly.

This valve is commonly used on filters that rely on a manual air relief system rather than a spring-loaded or automatic design. Its simple construction makes it reliable, easy to service, and easy to operate during startup and maintenance.

Confirm the installed assembly and follow its instructions for seals and attachment. Do not assume adapters, tools or sealing methods are identical across filter models.

When to Replace an Air Relief Valve

Air relief valves are exposed to constant pressure, moisture, chemicals, and outdoor conditions. Over time, even high-quality valves can degrade. Replacing a worn valve proactively can prevent more serious filter issues down the line.

Common signs that an air relief valve should be replaced include persistent leaking around the valve body, difficulty turning or opening the valve, visible cracks or brittleness in the plastic, or failure to vent air during startup. In some cases, a valve may appear functional but no longer seal correctly once closed, leading to slow pressure loss.

Replace a damaged matching valve and verify sealing and venting using the filter’s startup procedure. Investigate abnormal pressure separately.

Durable Construction for Pool Environments

Pool equipment operates in harsh conditions. Chlorine, salt systems, heat, UV exposure, and pressure cycling all take a toll on plastic components. The SW-26-908 is manufactured using chemical-resistant materials designed specifically for pool filtration systems.

The valve body is engineered to maintain structural integrity under pressure while remaining easy to operate by hand. This balance of strength and usability is essential for components that are opened and closed regularly during maintenance.

Unlike aging factory valves that may become brittle or seize over time, this replacement valve is built to provide consistent operation across repeated startup cycles.

Installation Overview

Replacing the air relief valve is a straightforward process for most pool professionals and mechanically inclined pool owners.

Turn off power and release all system pressure as the filter manual directs before removing the valve. Follow that manual for replacement and startup; stand clear while the system is pressurized.

Proper installation ensures a tight seal without overtightening, which can damage the filter lid or valve threads.

Why a Proper Air Relief Valve Matters

• Safely releases trapped air during startup and after service

• Manual venting according to the filter startup procedure

• Supports consistent, predictable filtration performance

• Reduces stress on filter internals and seals

• Inspect venting and sealing after filter service

This small component plays a large role in protecting your filtration system.

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase the Swimables Pentair Style Air Relief Valve (SW-26-908) from Benchmark Pool Supply, you’re buying from a real pool supply company that understands how these parts are used in the field.

We stock proven service components, verify compatibility, and support both homeowners and pool professionals. Our goal is to help keep filtration systems operating safely, efficiently, and reliably — not just sell parts.