Parker 4 Gtx-s Steel Flared Tube Connector 1/4 in Od

Product Description

The PARKER 4 GTX-S is a steel flared tube connector designed for high-pressure hydraulic and fluid-handling applications. It features a 37-degree flare angle with Flare x FNPT ends, connecting a 1/4-inch OD tube to a 1/8-inch NPTF female threaded port. Rated to a maximum working pressure of 6000 psi and a maximum working temperature of 500 degrees F (260 degrees C), this fitting is built for demanding service conditions. Overall length is 1.19 inches and the package weight is 0.4 pounds. Licensed plumbers, HVAC technicians, and hydraulic system technicians are the primary installers of this fitting type.

This connector is suited for use in residential and commercial fluid systems where a reliable transition between a flared tube line and a female NPT-threaded port is required. Typical applications include refrigeration and HVAC copper line connections, hydraulic plumbing, and pneumatic systems that operate within the rated pressure and temperature limits. The 37-degree flare angle conforms to SAE J514 and ISO 8434-2 standards, making it appropriate for systems built to those specifications.

Key Features

• 37-degree flare angle per SAE J514 and ISO 8434-2 standards
• Flare x FNPT end configuration for tube-to-threaded-port transitions
• Maximum working pressure of 6000 psi for high-pressure service
• Maximum working temperature of 500 degrees F (260 degrees C)
• NPTF thread standard for pressure-tight metal-to-metal sealing
• Steel construction for durability in demanding fluid-system environments

Compatibility

Designed as an OEM-style replacement or new-installation fitting for fluid systems using 1/4-inch OD flared tubing and 1/8-inch NPTF female threaded ports conforming to SAE J514 or ISO 8434-2 specifications.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified hydraulic technician. Depressurize and isolate the system completely before removing or installing any fittings. Inspect the tube flare for cracks or deformation before assembly; a proper 37-degree flare seat is required for a leak-free connection. NPTF threads rely on thread-form interference for sealing — use appropriate thread sealant or tape only if required by the system manufacturer, and do not overtighten.