Parker 4050-16P O-ring Boss Poppet Coupler 7/8-14 3000 Psi

Product Description

The PARKER 4050-16P is a steel O-Ring Boss (ORB) poppet-style hydraulic hose coupler rated for 3,000 psi working pressure. It features a 7/8-14 thread size with an SAE shaft type and a 0.5-inch body diameter. This fitting is designed to create a leak-resistant, pressure-tight connection in hydraulic lines by sealing against a machined boss surface with an O-ring rather than relying on thread deformation. It is installed by hydraulic system technicians and fluid power specialists in mobile equipment, industrial machinery, and stationary hydraulic power units.

This coupler is suited for medium- to high-pressure hydraulic circuit connections where a reliable, vibration-resistant seal is required. The ORB poppet design is commonly used in applications where repeated disconnection and reconnection cycles occur, such as in agricultural equipment, construction machinery, and industrial hydraulic systems. Its steel construction makes it appropriate for use in demanding environments where pressure surges and mechanical stress are regular operating conditions.

Key Features

• 3,000 psi working pressure rating suitable for medium- and high-pressure hydraulic circuits
• O-Ring Boss poppet design provides a positive, leak-resistant seal at the boss face
• 7/8-14 thread size conforms to SAE standards for broad system compatibility
• Steel construction offers durability under pressure cycling and mechanical stress
• 0.5-inch body diameter for integration into standard hydraulic line assemblies

Compatibility

Designed as an OEM-style replacement or service fitting for SAE O-Ring Boss hydraulic connections using 7/8-14 thread and a 0.5-inch body diameter in industrial and mobile hydraulic systems.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit fully before removing or installing any fittings. Inspect the O-ring sealing surface on the boss for nicks, scoring, or contamination before torquing the fitting. Follow applicable SAE and equipment manufacturer torque guidelines for ORB fittings to avoid over-compression of the O-ring or thread damage.