Parker 1/4 Gg-s Pipe Coupling 6000 Psi Fnptf Zinc-plated

Product Description

The PARKER 1/4 GG-S is a straight industrial pipe coupling designed for high-pressure fluid and pneumatic systems. It features a 0.25-inch female National Pipe Taper Fuel (FNPTF) thread on both ends and is rated to 6,000 psi maximum working pressure. The body is constructed from zinc-plated steel, providing corrosion resistance in demanding service environments. This coupling connects two sections of pipe or tube in a straight-line configuration and is installed by licensed plumbers, industrial pipefitters, and mechanical contractors working on hydraulic, pneumatic, or process piping systems.

This coupling suits residential, commercial, and industrial applications where a reliable threaded straight connection is required in high-pressure lines. Typical installation scenarios include hydraulic power units, compressed air distribution, fuel lines, and other systems requiring FNPTF-rated fittings. The zinc-plated finish makes it suitable for use in moderately corrosive environments. It ships as a single unit with a minimum order quantity of one.

Key Features

• 6,000 psi maximum working pressure rating for high-pressure service
• FNPTF thread classification ensures a pressure-tight, fuel-service-rated connection
• Zinc-plated steel construction provides corrosion resistance
• Straight fitting shape for in-line pipe-to-pipe connections
• 0.75-inch hex size for standard wrench installation
• Overall length of 1.125 inches for compact inline fitment

Compatibility

Designed as an OEM-style straight coupling for high-pressure piping systems using 0.25-inch FNPTF threaded connections in hydraulic, pneumatic, and process piping applications.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters following applicable codes such as the IPC or relevant hydraulic system standards. Depressurize and isolate the line completely before removing or installing any fittings. Use an appropriate thread sealant rated for the system fluid and pressure; do not use tape or sealant that is incompatible with the system media. Tighten with a properly sized wrench on the hex flats — do not over-torque, as this can damage the threaded connection.