Parker 1719909 Female O-ring Boss Coupler 3/4 in 4000 Psi

Product Description

The PARKER 1719909 is a straight, threaded female O-Ring Boss (ORB) coupler designed for hydraulic hose connections in high-pressure fluid power systems. Built from steel with a 3/4-inch hose size and a 1-1/16-12 thread size, this coupler carries a maximum working pressure of 4,000 psi and a maximum flow rate of 28.00 GPM. The straight body profile measures 3.35 inches in overall length. It conforms to ISO 7241-1 Series A standards and belongs to the Parker 6600 Series. Licensed HVAC and fluid power technicians, hydraulic mechanics, and equipment service professionals install this fitting in mobile and industrial hydraulic circuits.

This coupler is rated for use in mobile hydraulic applications, including snow plows and truck and trailer connections. The female ORB configuration seals against a machined boss port using an O-ring face seal, reducing leak paths compared to pipe thread fittings. Its steel construction and SAE shaft type make it suitable for demanding field service environments where vibration and pressure cycling are common. The 4,000 psi pressure rating supports high-demand circuits typical in commercial vehicle and mobile equipment hydraulics.

Key Features

• Female O-Ring Boss (ORB) coupler with straight body and threaded connection
• Maximum working pressure of 4,000 psi for high-pressure hydraulic circuits
• Maximum flow rate of 28.00 GPM
• 3/4-inch hose size with 1-1/16-12 thread size
• Conforms to ISO 7241-1 Series A standards
• Steel construction suited for mobile and heavy-duty applications

Compatibility

Rated for use with mobile hydraulic applications including snow plows and truck and trailer connections. Part of the Parker 6600 Series, conforming to ISO 7241-1 Series A.

Installation Notes

Installation should be performed by a qualified hydraulic technician or mechanic familiar with fluid power systems. Depressurize and isolate the hydraulic circuit completely before removing or installing any fitting. Inspect the O-ring for damage before assembly and ensure the mating boss port surface is clean and free of burrs. Torque to the appropriate value per the equipment manufacturer specifications and applicable SAE or ISO guidelines.