Cejn 10 300 5402 Pneumatic Coupling 1/4 in Fnpt Aro

Product Description

The CEJN 10 300 5402 is a high flow pneumatic hose connector designed for compressed air systems in industrial and trade applications. This Series 300 connector features a 1/4-inch FNPT threaded connection and a 1/4-inch body diameter, with a zinc-finished steel construction built to handle a maximum working pressure of 232 psi. It uses an ARO interchange pattern, making it a direct-fit option in systems already built around that standard. Licensed HVAC technicians, pipefitters, and industrial maintenance pros typically install this type of fitting during equipment hookup or line repair.

This connector is suited for compressed air distribution in light industrial, maintenance, and manufacturing environments. The ARO interchange pattern is widely used across pneumatic tool lines and compressor piping setups. The threaded FNPT connection allows installation into standard female-tapped ports on manifolds, regulators, and similar equipment. It is rated for temperatures from -4 degrees F to 212 degrees F, covering typical shop and outdoor service conditions.

Key Features

• ARO interchange pattern for compatibility with ARO-standard pneumatic systems
• 1/4-inch FNPT threaded connection for standard tapped-port installation
• 232 psi maximum working pressure for compressed air service
• Zinc-finished steel body for corrosion resistance in shop environments
• Rated from -4 degrees F to 212 degrees F for broad temperature range coverage
• Series 300 high flow connector design for reduced pressure drop

Compatibility

Designed as an ARO-interchange replacement connector for pneumatic systems using 1/4-inch FNPT threaded ports and ARO-pattern quick-connect couplings.

Installation Notes

Installation is performed by qualified maintenance technicians or pipefitters working on compressed air systems. Always depressurize and bleed the air line fully before removing or installing any pneumatic fitting. Use thread sealant appropriate for air service on the FNPT threads and tighten to a snug fit without over-torquing the steel body. Verify working pressure does not exceed the 232 psi rating of this connector after returning the system to service.