Parker 6-6-6 Stx-s Steel Male Branch Tee 3/8 in Flare

Product Description

The PARKER 6-6-6 STX-S is a steel flared tube male branch tee fitting designed for high-pressure hydraulic and fluid power lines. It connects three fluid paths using a 37-degree flare configuration with Flare x MNPTF end connections. The 3/8 inch tube OD and 3/8 NPTF thread sizing make it a common choice in medium-duty hydraulic circuits and pneumatic systems. Rated to 6,000 psi maximum working pressure and 500 degrees F, this fitting holds up in demanding industrial environments. Licensed HVAC techs, plumbers, and pipefitters working with steel tubing assemblies will recognize the standard SAE J514 flare geometry. The compact 2.28 inch overall length suits tight plumbing configurations.

This fitting is used in industrial fluid power systems, hydraulic tubing assemblies, and high-pressure plumbing circuits where a branch tee connection is required. The male NPT branch port allows direct threaded connection into a manifold, valve body, or port boss, while the two flare ends accept 3/8 inch OD steel tubing. It suits both stationary and mobile hydraulic applications where steel construction is required for pressure and temperature compatibility. Trade installers working with SAE 37-degree flare systems will find this fitting a direct-fit component for branching hydraulic lines.

Key Features

• 37-degree flare angle per SAE J514 and ISO 8434-2 standards
• 6,000 psi maximum dynamic working pressure
• Rated to 500 degrees F (260 degrees C) maximum working temperature
• Flare x MNPTF end connections for versatile plumbing configurations
• Steel construction for durability in high-pressure fluid power systems
• Compact 2.28 inch overall length suits space-constrained installations

Compatibility

Designed as an OEM-style replacement or new-install fitting for SAE 37-degree flare hydraulic and fluid power tube assemblies using 3/8 inch OD steel tubing with 3/8 NPTF threaded branch ports.

Installation Notes

Installation should be performed by a qualified pipefitter, hydraulic technician, or licensed plumber. Depressurize and drain the system completely before removing or installing any fittings. Inspect flare seats and tube ends for damage before assembly, as a compromised flare surface will not seal at rated pressure. Torque to fitting manufacturer specifications and verify for leaks before returning the system to service.