Parker PQ-00045 Hydraulic Hose Coupler 5000 Psi 16 Mm

Product Description

The PARKER PQ-00045 is a steel hydraulic hose coupler rated for 5,000 psi maximum working pressure. Part of the FF Series, it features a 9/16-18 UNF threaded connection and is designed for use in high-pressure hydraulic fluid power systems. With a coupler size of 0.25 inches and an overall length of 1.91 inches, this compact fitting delivers reliable sealing performance in demanding hydraulic circuits. It is installed by hydraulic system technicians, industrial maintenance mechanics, and fluid power specialists working on mobile or stationary equipment. The package contains 2 couplers per unit.

This coupler is suited for high-pressure hydraulic hose assemblies where a threaded UNF connection is required. It supports a maximum flow rate of 3.00 GPM and handles operating pressures up to 5,000 psi, making it appropriate for industrial hydraulic circuits, mobile hydraulic equipment, and related fluid power applications. The steel construction provides durability in environments with exposure to hydraulic fluids, mechanical stress, and temperature variation typical of hydraulic system service.

Key Features

• Rated to 5,000 psi maximum working pressure for high-pressure hydraulic service
• FF Series UNF threaded connection, 9/16-18 thread size
• Steel construction for mechanical durability and hydraulic fluid compatibility
• Compact overall length of 1.91 inches fits tight hydraulic assembly spaces
• Supports up to 3.00 GPM maximum flow rate
• Sold in packages of 2 couplers

Compatibility

Designed as an OEM-style replacement or service fitting for high-pressure hydraulic hose assemblies using 16 mm hose diameter and 9/16-18 UNF threaded connections in industrial and mobile hydraulic systems.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Before servicing, fully depressurize the hydraulic system and relieve any stored energy in accumulators or cylinders. Use appropriate thread sealant or fitting procedures per the equipment manufacturer specifications and applicable fluid power standards. Inspect threads and sealing surfaces for damage before assembly to ensure a leak-free connection at rated pressure.