Parker 6-6-6 Rtx-s Steel Male Run Tee 3/8 in Flare

Product Description

The PARKER 6-6-6 RTX-S is a steel male run tee fitting designed for high-pressure hydraulic and fluid-system plumbing. It accepts 3/8-inch tube OD on the flare ends and connects to a 3/8-inch NPTF male thread on the branch port. The 37-degree flare seating angle conforms to SAE J514 and ISO 8434-2, creating a metal-to-metal seal suited to demanding service. Rated to 6000 psi maximum working pressure and up to 500 degrees F, this fitting handles conditions found in industrial hydraulic lines, refrigeration circuits, and fuel systems. Licensed trades and industrial mechanics use this fitting to branch a run of tubing while maintaining a straight-through flow path.

This fitting is appropriate for residential and commercial applications where a flared tube line must be teed into an existing run with a male NPT branch connection. Typical scenarios include hydraulic manifold assemblies, fuel-line plumbing, and refrigeration or HVAC service lines that require a robust, reusable metal-to-metal seal. The NPTF thread design provides a pressure-tight connection without relying solely on thread sealant. It is sold individually and is intended for professional installation in systems that demand high-cycle durability and leak-free performance at elevated pressure and temperature.

Key Features

• 37-degree flare angle meets SAE J514 and ISO 8434-2 standards for reliable metal-to-metal sealing
• Rated to 6000 psi maximum working pressure for demanding hydraulic and fluid-system use
• Temperature range extends to 500 degrees F, supporting high-heat service environments
• Steel construction provides strength and durability for industrial and trade applications
• NPTF thread standard ensures a pressure-tight branch connection with or without supplemental sealant
• Male run tee configuration maintains straight-through tube flow while adding a threaded branch port

Compatibility

Designed as an OEM-style replacement or new-installation fitting for flared tube assemblies using 3/8-inch OD tubing with 37-degree flare ends and 3/8-inch NPTF male branch connections in hydraulic, fuel, and refrigeration systems.

Installation Notes

Installation should be performed by a licensed mechanic, pipefitter, or HVAC technician familiar with flared tube fittings and NPTF threaded connections. Depressurize and isolate the system fully before removing any existing fittings or tubing. Inspect flare seats for scoring or damage before assembly, and verify tube OD and thread size match the fitting before installation. Consult applicable standards including SAE J514 and relevant sections of the IPC or IFGC for system-specific code requirements.