Jandy | R0557200 | CS Filter Air Relief Valve – Jandy CS/CJ Series Cartridge Filters

The Jandy R0557200 Air Relief Valve is a genuine OEM replacement designed for use with Jandy CS100/150/200/250 and CJ200/250 cartridge filter tanks. It allows trapped air to be safely released from the filter chamber, promoting optimal circulation and pressure stability.

Key Features

• OEM replacement part for Jandy CS and CJ series cartridge filters.

• Compatible with models: CS100, CS150, CS200, CS250, CJ200, CJ250. 

• Releases trapped air from the filter tank to maintain correct pressure and efficient flow. 

• Made from durable, chemical-resistant materials suitable for pool environments. 

• Easy installation and replacement—screw-in style valve that fits tank boss threads. 

• Shipping weight approximately 0.3 lb. 

Product Overview
The Jandy R0557200 Air Relief Valve plays a vital role in maintaining the performance and longevity of your cartridge filter system by enabling proper venting of entrapped air. In filter tanks such as the CS and CJ series, air pockets can form due to system start-up, suction conditions, or after maintenance. These air pockets can decrease filtering efficiency, cause erratic pressure readings, or even damage internal components.

By installing this OEM relief valve, you restore the correct venting capability, ensuring the tank maintains stable pressure, full surface area utilization, and efficient water flow. Because the R0557200 is built to Jandy specifications, it ensures a direct fit with compatible tanks and helps maintain system integrity for both residential and commercial pool setups.

If you’d like, I can also pull together installation torque specs, thread size and sealing details, and a cross-reference list for alternate part numbers used by Jandy/Zodiac for this valve.