Parker 12 Otx-s Steel Female Branch Tee 3/4 in Od

Product Description

The PARKER 12 OTX-S is a steel female branch tee fitting designed for use in high-pressure hydraulic and fluid power systems. It accepts flared tubing on its run and branch ports and connects to female National Pipe Taper Fuel (NPTF) threads, providing a leak-resistant sealed connection without the need for additional thread sealant. The fitting features a 37-degree flare angle per SAE J514 standards and is rated for a maximum working pressure of 3000 psi and temperatures up to 500 degrees F. It is sized for 3/4-inch tube OD and is installed by licensed plumbers, hydraulic system technicians, and industrial maintenance professionals in both mobile and stationary fluid power applications.

This fitting is suited for residential and commercial plumbing, hydraulic power units, industrial fluid lines, and mobile equipment where a branch connection is required along a pressurized tube run. The flare-by-FNPTF end configuration allows the fitting to transition between flared tube lines and threaded port connections within the same assembly. It is commonly installed in locations where tube routing requires a tee junction under dynamic pressure conditions.

Key Features

• 37-degree flare angle per SAE J514 and ISO 8434-2 for leak-resistant tube connections
• Steel construction rated to 500 degrees F and 3000 psi maximum working pressure
• Flare x FNPTF end connection for tube-to-thread branch transitions
• NPTF thread standard provides a dry-seal fit without additional thread compound
• Compact overall length of 3.78 inches for tight installation spaces
• Meets SAE 070427, SAE J514, and ISO 8434-2 standards

Compatibility

Designed as an OEM-style replacement or new-installation fitting for hydraulic and fluid power systems using 3/4-inch OD flared tube lines with NPTF threaded port connections.

Installation Notes

Installation should be performed by a qualified plumber or hydraulic technician in accordance with applicable codes and the fitting manufacturer specifications. Depressurize and isolate the fluid system completely before removing or installing any fittings. Use appropriate flare tools calibrated for a 37-degree seat angle to avoid leaks at the tube connection. Do not overtighten NPTF threaded connections, as steel fittings can crack under excessive torque without a defined yield-point indicator.