Parker 1719785 Female O-ring Boss Coupler 1/2 in 4000 Psi

Product Description

The PARKER 1719785 is a straight female O-ring boss (ORB) hydraulic hose coupler rated for 4,000 psi maximum working pressure. Built from steel with a 3/4-16 thread size and a 1/2-inch hose size, this fitting is engineered for high-pressure hydraulic circuits in mobile and industrial equipment. It measures 2.74 inches in overall length with a 1/2-inch body diameter, and weighs 0.68 pounds. The threaded connection type ensures a leak-resistant seal through the O-ring boss interface. It meets ISO 7241-1 Series A standards and belongs to the Parker 6600 Series product line. Licensed hydraulic technicians and fleet mechanics are the typical installers.

This coupler is designed for mobile hydraulic applications including snow plows and truck-trailer connections. It is suited for use in systems requiring a reliable, threaded ORB connection at moderate-to-high flow rates up to 12.00 GPM. The straight body profile makes it appropriate for tight routing scenarios where an in-line fitting is preferred. Both OEM and aftermarket hydraulic system builds in commercial vehicles and mobile equipment are common installation environments for this part.

Key Features

• 4,000 psi maximum working pressure for demanding mobile hydraulic circuits
• Female O-ring boss thread (3/4-16 SAE) provides a metal-to-metal seat with O-ring sealing to minimize leak paths
• Maximum flow rate of 12.00 GPM supports efficient fluid transfer in high-demand systems
• Steel body construction delivers durability in harsh mobile and outdoor environments
• Straight profile with 2.74-inch overall length suits compact hydraulic manifold and hose routing layouts
• Meets ISO 7241-1 Series A standards for dimensional and performance conformance

Compatibility

Specified for use with mobile applications, snow plows, and truck-trailer hydraulic connections. Designed as a direct-fit ORB coupler for hydraulic hose assemblies requiring a 1/2-inch hose size and a 3/4-16 threaded female boss port.

Installation Notes

Installation should be performed by a qualified hydraulic technician or mechanic familiar with high-pressure fluid systems. Depressurize and de-energize the hydraulic system fully before disconnecting or installing any fitting. Clean all mating surfaces and inspect the O-ring for damage before assembly. Tighten to the fitting manufacturer's recommended procedure using appropriate hydraulic fitting tools — do not overtighten, as this can damage the O-ring seat or thread.