Jandy | R0557100 | Pressure Gauge Adapter for CJ200/CJ250 Cartridge Filters

The Jandy R0557100 Pressure Gauge Adapter is a genuine OEM replacement part engineered for Jandy CJ200 and CJ250 cartridge filters (also compatible with CS100, CS150, CS200, CS250 models). It enables accurate mounting of the pressure gauge and includes an O-ring seal to ensure a watertight connection in the filter tank. 

Key Features

• Genuine Jandy OEM adapter (Part # R0557100) designed for cartridge filter tanks. 

• Compatible with Jandy filter models: CJ200, CJ250; also widely used in CS100, CS150, CS200, CS250. Provides a secure threaded connection for the pressure gauge, improving gauge accuracy and reliability. 

• Includes pre-installed O-ring to maintain proper sealing and prevent leaks. 

• Made from durable, corrosion-resistant material suitable for pool water environments. 

• Convenient and easy-to-install replacement part—ideal for maintenance and service routines.

Product Overview
The Jandy R0557100 Pressure Gauge Adapter is a small but essential component that ensures your cartridge filter’s pressure gauge is properly mounted and sealed. Over time, the adapter or its O-ring can wear or crack due to exposure to pool chemicals and pressure cycling, leading to inaccurate gauge readings or potential leaks. Installing this factory original replacement restores the integrity of the gauge connection and helps maintain correct filter performance diagnostics.

Because filter pressure readings are vital for determining when to clean or change cartridge elements, a dependable adapter like the R0557100 ensures that you can trust your gauge readings and therefore maintain efficient filtration. It's suitable for both residential and commercial pool service technicians and aligns with OEM specification for reliability and compatibility.