Parker PQ-00072 Hydraulic Hose Coupler 6700 Psi Nptf

Product Description

The PARKER PQ-00072 is a stainless steel hydraulic hose coupler designed for high-pressure fluid conveyance in hydraulic systems. Rated to 6,700 psi maximum working pressure, this threaded coupler accepts a 4 mm (1/4 inch) hose and features a 1/4-18 NPTF thread connection for a pressure-tight seal without sealant tape. The Series ST design supports a maximum flow rate of 6.00 GPM. At 1.54 inches overall length, the compact body fits in tight plumbing configurations. This part is installed by hydraulic system technicians and industrial maintenance professionals working on mobile or stationary hydraulic circuits.

This coupler is suited for use in industrial, mobile equipment, and manufacturing hydraulic circuits where compact, high-pressure fittings are required. The NPTF threaded connection makes it appropriate for systems where a dry-seal thread is preferred over standard NPT. It is commonly used in hydraulic lines on machinery, presses, and fluid power equipment operating within its rated pressure range. Sold in a package quantity of two.

Key Features

• 6,700 psi maximum working pressure for demanding hydraulic applications
• Stainless steel construction for corrosion resistance in harsh or wet environments
• 1/4-18 NPTF dry-seal thread eliminates the need for thread sealant tape in most installations
• 1/4 inch hose diameter compatibility with 1.54 inches overall length for compact fitment
• Maximum flow rate of 6.00 GPM suitable for typical small-bore hydraulic circuits
• Parker Series ST design for consistent dimensional and performance standards

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic hose assemblies requiring a 4 mm, 1/4-18 NPTF threaded coupler rated to 6,700 psi.

Installation Notes

Installation should be performed by a qualified hydraulic technician. Depressurize and bleed the hydraulic system fully before disconnecting any fittings or hose assemblies. NPTF threads are designed as dry-seal connections; inspect thread condition before installation and confirm thread engagement meets system requirements. Torque to system-specific values per the equipment manufacturer's guidelines, not to generic estimates.