Parker 1/2 X 3/8 Gg-s Straight Pipe Coupling 5000 Psi

Product Description

The PARKER 1/2 X 3/8 GG-S is a straight reducing pipe coupling designed for high-pressure industrial fluid and pneumatic systems. It features female-to-female FNPTF threading in a 1/2 inch by 3/8 inch reducing configuration, rated for a maximum working pressure of 5,000 psi. The overall length is 1.5 inches with a hex size of 1.125 inches for wrench engagement. This fitting is installed by pipefitters, millwrights, and industrial mechanics in compressed gas, hydraulic, and process piping applications where a reliable threaded reduction is required.

This coupling is suited for industrial piping systems operating at elevated pressures. Its straight, compact geometry makes it a practical choice in tight spaces where a reducing female-to-female connection is needed. The FNPTF thread classification ensures a pressure-tight mechanical seal when properly torqued and sealed with appropriate thread compound or tape, following standard industrial plumbing practice.

Key Features

• Maximum working pressure of 5,000 psi for demanding high-pressure service
• Straight fitting shape for in-line installation without directional offset
• Reducing FNPTF thread configuration: 1/2 inch female inlet to 3/8 inch female outlet
• 1.125-inch hex size provides secure wrench grip during installation
• Compact overall length of 1.5 inches minimizes space requirements

Compatibility

Designed as an OEM-style replacement or service fitting for industrial piping systems requiring a straight FNPTF reducing coupling rated to 5,000 psi.

Installation Notes

Installation is typically performed by licensed pipefitters or qualified industrial mechanics. Shut down and fully depressurize the system before removing or installing any threaded fitting. Apply an approved thread sealant or PTFE tape to male threads in accordance with the applicable piping code before assembly. Do not over-torque; use the hex flats and a properly sized wrench to achieve a secure, leak-free connection.