Parker 4 Otx-s Steel Female Branch Tee 1/4 in Od

Product Description

The PARKER 4 OTX-S is a steel female branch tee fitting designed for flared tube connections in high-pressure hydraulic and fluid power systems. It features a 37-degree flare angle with flare x FNPTF end connections, conforming to SAE J514 and ISO 8434-2 standards. With a maximum working pressure of 5000 psi and a maximum working temperature of 500 degrees F, this fitting is built for demanding industrial and mobile equipment applications. Plumbers, hydraulic technicians, and fluid power specialists install this fitting where a branch connection is needed off a main tube line without welding or brazing.

This fitting is suited for residential and commercial fluid power, hydraulic, and pneumatic systems where a 1/4 inch OD flared tube must branch off to a female NPTF threaded port. The 37-degree flare design ensures a metal-to-metal seal that resists vibration loosening under dynamic pressure loads. It is commonly used in OEM equipment builds, field service repairs, and system retrofits wherever a compact branch tee is required in a steel tube circuit.

Key Features

• 37-degree flare angle per SAE J514 and ISO 8434-2 for a reliable metal-to-metal seal
• Maximum working pressure of 5000 psi for demanding hydraulic service
• Rated to 500 degrees F (260 degrees C) for high-temperature fluid systems
• Flare x FNPTF end connections for compatibility with standard NPTF threaded ports
• Steel construction for strength and durability in industrial environments
• NPTF thread standard minimizes the need for additional thread sealants

Compatibility

Designed as an OEM-style replacement or service fitting for steel flared tube hydraulic and fluid power systems using 1/4 inch OD tubing and 1/8 inch NPTF threaded ports.

Installation Notes

Installation should be performed by a qualified hydraulic technician or licensed plumber familiar with SAE flare fittings and NPTF thread connections. Depressurize and drain the system completely before removing or installing any fittings. Use appropriate flaring tools to achieve a proper 37-degree flare on the tube end before assembly to ensure a leak-free metal-to-metal seal. Inspect the flare and threads for damage before torquing to the system specification.