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

Product Description

The PARKER 4050-16 is a steel Ball O-Ring Boss (ORB) coupler designed for hydraulic hose assemblies operating at up to 3,000 psi. It features a 7/8-14 thread size and a 0.5-inch body diameter, conforming to SAE standards for O-ring boss fittings. This coupler creates a leak-resistant connection by seating an O-ring against a machined boss face, eliminating the need for thread sealants. It is used in medium- to high-pressure hydraulic circuits on mobile equipment, industrial machinery, and power units. Licensed hydraulic technicians and fluid power specialists are the primary installers.

This fitting is suited for hydraulic systems where reliable, reusable connections are required at pressures up to 3,000 psi. The SAE ORB configuration makes it a common choice in construction equipment, agricultural machinery, and industrial power units where standardized port connections are specified. Its steel construction handles the mechanical stress and vibration typical of mobile hydraulic installations.

Key Features

• Ball O-Ring Boss coupler design provides a positive, leak-resistant seal without thread sealant
• Rated to 3,000 psi working pressure for medium- to high-pressure hydraulic service
• 7/8-14 thread size per SAE ORB standard
• 0.5-inch body diameter for consistent flow and compatibility with standard hose ends
• Steel construction for durability under mechanical stress and vibration
• Single-piece package quantity suitable for individual replacement or repair jobs

Compatibility

Designed as an OEM-style replacement fitting for SAE O-ring boss hydraulic hose and port connections rated at 3,000 psi with a 7/8-14 thread.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit completely before disconnecting or installing any fittings. Inspect the O-ring for damage before assembly and ensure the boss port face is clean and free of burrs. Follow applicable SAE and equipment manufacturer torque guidelines for ORB fittings to avoid over-tightening or seal distortion.