Parker PP-00312 Male Orfs Swivel Fitting 0.25 in Hydraulic

Product Description

The PARKER PP-00312 is a male O-ring face seal (ORFS) swivel fitting designed for high-pressure hydraulic hose assemblies. It features a straight, threaded connection with a Seal-Lok O-ring face seal interface, providing a leak-resistant joint under dynamic and static hydraulic system pressures. The fitting is constructed from steel and is sized for 1/4-inch (0.25-inch inside diameter) hose, corresponding to hose size 4. The thread size is 11/16-16, and overall length is 2.08 inches (53 mm). It is installed by hydraulic system technicians and fluid power specialists in mobile and industrial equipment applications.

This fitting is suited for use in hydraulic systems requiring a secure, vibration-resistant swivel connection at hose termination points. The ORFS interface minimizes the risk of fluid leakage at the fitting face, making it a standard choice for high-pressure lines in mobile equipment, construction machinery, agricultural machinery, and industrial fluid power systems. The swivel design allows for easy hose routing and reduces torque stress on the hose assembly during installation.

Key Features

• Male ORFS (O-ring face seal) swivel connection for leak-resistant hydraulic joints
• Seal-Lok shaft type provides positive sealing via O-ring face contact
• Steel construction for durability in high-pressure hydraulic service
• Straight shape with threaded connection for direct hose-to-port routing
• 11/16-16 thread size compatible with standard ORFS port configurations
• Meets SAE J516 standard; California PROP 65 listed

Compatibility

Designed for use with Parker hose series 187 TC, ST; 302; 304; 387 TC, ST; 422; 424; 426; 436; 471TC; 471ST; 472TC; 482TC; 482ST; 487 TC, ST; 722 TC, ST; 787 TC, ST; 797 TC, ST; and 881 hoses in size 4 (1/4-inch inside diameter).

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and isolate the hydraulic circuit completely before disassembling any fittings or hose ends. Ensure the O-ring is properly seated and in good condition before making up the connection; a damaged or missing O-ring will result in leakage. Torque the fitting to the specification listed in the Parker assembly guide for 11/16-16 ORFS connections and verify for leaks before returning the system to service.