Parker PQ-00079 Hydraulic Hose Coupler 5500 Psi 6mm Nptf

Product Description

The PARKER PQ-00079 is a stainless steel hydraulic hose coupler rated for 5,500 psi maximum working pressure. It features a 3/8-18 NPTF threaded connection and is designed for a 6 mm hose size with a coupler size of 0.375 inches. The overall length is 1.75 inches. This coupler is part of the Parker ST Series and is built for high-pressure hydraulic plumbing applications. Licensed hydraulic technicians and industrial plumbers install this fitting where a reliable, leak-resistant threaded connection is required in demanding fluid-power systems.

The PQ-00079 is suited for use in industrial and mobile hydraulic systems where high working pressure and corrosion resistance are priorities. The stainless steel construction makes it appropriate for environments exposed to moisture, chemicals, or washdown conditions. With a maximum flow rate of 12.00 GPM and a compact 1.75-inch overall length, it fits into tight plumbing configurations typical of hydraulic power units, cylinders, and valve assemblies in both stationary and mobile equipment.

Key Features

• 5,500 psi maximum working pressure for high-pressure hydraulic circuits
• Stainless steel construction for corrosion resistance in harsh environments
• 3/8-18 NPTF threaded connection for a dryseal, leak-resistant fit
• Maximum flow rate of 12.00 GPM supports demanding hydraulic flow requirements
• Compact overall length of 1.75 inches for installation in confined spaces
• Parker ST Series design for consistent dimensional and performance standards

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic systems using 6 mm hose with 3/8-18 NPTF threaded ports operating up to 5,500 psi.

Installation Notes

Installation should be performed by a qualified hydraulic technician or licensed plumber familiar with high-pressure fluid-power systems. Depressurize and fully isolate the hydraulic circuit before removing or installing any fitting. NPTF dryseal threads are designed to seal on thread engagement alone, but verify thread condition and apply appropriate thread sealant per system requirements. Torque to the fitting manufacturer and system specifications; do not overtighten stainless steel threads to avoid galling.