Parker 12 Stx-s Steel Male Branch Tee 3/4 in Od 37 Degree Flare

Product Description

The PARKER 12 STX-S is a steel male branch tee fitting designed for flared tube hydraulic and fluid power connections. It accepts 3/4-inch tube OD on the flare ends and a 3/4-inch male NPTF thread on the branch port, with a 37-degree flare angle conforming to SAE J514 and ISO 8434-2 standards. Rated to 4000 psi maximum dynamic working pressure and a maximum temperature of 500 degrees F, this fitting is built for demanding industrial and mobile hydraulic plumbing applications. Licensed plumbers, pipefitters, and hydraulic system technicians install this type of fitting where a branch connection is needed in a pressurized steel tubing circuit.

The 12 STX-S is suited for use in industrial hydraulic systems, fluid power circuits, and high-pressure tubing assemblies where a tee branch connection with an NPTF port is required. Its steel construction makes it appropriate for applications involving elevated pressures and temperatures typical of heavy equipment, machine tool, and stationary hydraulic power unit installations. The 37-degree flare end connections provide a reliable metal-to-metal seal at each tube junction.

Key Features

• 37-degree SAE flare end connections per SAE J514 for reliable metal-to-metal tube sealing
• 3/4-inch tube OD flare inlets with 3/4-inch MNPTF branch port
• 4000 psi maximum dynamic working pressure
• Rated to 500 degrees F maximum working temperature
• Steel construction for high-pressure and high-temperature service
• Compliant with ISO 8434-2, SAE 070425, and SAE J514 standards

Compatibility

Designed as an OEM-style replacement or service fitting for steel flared tube hydraulic assemblies requiring a 3/4-inch OD male branch tee with 37-degree flare and NPTF thread connections.

Installation Notes

Installation should be performed by a qualified pipefitter or hydraulic system technician familiar with SAE flare fittings and NPTF thread connections. Depressurize and isolate the hydraulic circuit completely before removing or installing any fittings. Inspect flare seats and tube ends for damage before assembly, as nicks or burrs on the seating surface will compromise the metal-to-metal seal. Follow SAE J514 assembly procedures for flared connections and apply appropriate thread sealant or tape to the NPTF port per the system designer's specification.