Parker 1/4 X 1/8 Gg-s Pipe Coupling Fnptf 6000 Psi

Product Description

The PARKER 1/4 X 1/8 GG-S is a straight pipe coupling designed for high-pressure hydraulic and industrial piping systems. It features a female-to-female FNPTF (Dryseal) thread connection in a reducing configuration, with a 1/4-inch thread on one end and a 1/8-inch thread on the other. Rated to 6,000 psi maximum working pressure, this coupling is built from zinc-plated steel for corrosion resistance in demanding service environments. It is a compact, straight-body fitting suitable for connecting or reducing between two female-threaded pipe runs. Licensed plumbers, pipefitters, and industrial maintenance technicians routinely install this type of fitting in fluid power, compressed air, and hydraulic lines.

This coupling is suited for use in industrial fluid systems, compressed air distribution, and hydraulic circuits where a reducing female thread connection is required. The FNPTF thread form provides a pressure-tight seal on the threads themselves without relying solely on sealant tape, making it appropriate for high-pressure service lines. The compact overall length of 15/16 inch and 3/4-inch hex allow installation in tight spaces using standard open-end or adjustable wrenches.

Key Features

• Rated to 6,000 psi maximum working pressure for high-pressure service
• FNPTF (Dryseal Female National Pipe Thread) connection on both ends
• Reducing configuration: 1/4-inch x 1/8-inch female thread sizes
• Zinc-plated steel construction for corrosion resistance
• Straight fitting shape for in-line installation
• 3/4-inch hex size for standard wrench engagement; 15/16-inch overall length

Compatibility

Designed as a standard FNPTF reducing coupling for industrial piping and fluid power systems requiring a 1/4-inch x 1/8-inch female-to-female straight connection at pressures up to 6,000 psi.

Installation Notes

Installation is typically performed by licensed pipefitters, plumbers, or qualified industrial maintenance technicians. Depressurize and isolate the line completely before removing or installing any threaded fitting. FNPTF threads are designed to seal on the thread form; apply thread sealant per the system requirements and applicable codes. Use a properly sized wrench on the hex flats and avoid over-tightening, which can crack or deform the fitting body.