Eaton 1077X4 Barbed Female Branch Tee 1/8 in Nptf

Product Description

The EATON 1077X4 is a barbed tube female branch tee fitting designed to split or branch a fluid or pneumatic line in low-pressure tubing systems. Constructed from brass, this tee features a 1/8 inch NPTF female threaded port and accepts 1/4 inch outer diameter tubing on the barbed ends. The NPTF thread form creates a pressure-tight mechanical seal without requiring additional sealant, making it a reliable choice for instrumentation, fuel, coolant, and pneumatic control lines. At 0.0375 pounds, it is a compact, lightweight component suited for tight installations where space and weight are concerns. Plumbers, HVAC technicians, and fluid-system mechanics routinely use fittings of this type when routing small-bore tubing through equipment panels or manifold assemblies.

This fitting is appropriate for residential and light commercial applications involving small-diameter flexible tubing. Typical use cases include pneumatic control circuits, fuel-line branching, coolant distribution in HVAC equipment, and low-pressure fluid handling systems. The brass construction makes it compatible with a wide range of media including water, oil, and many compressed-air service environments. It is sold individually and installs quickly by hand with standard hand tools for the threaded port side and a barb-insertion method on the tube ends.

Key Features

• Brass construction for durability and corrosion resistance in common fluid and pneumatic service environments
• 1/8 inch NPTF female thread provides a pressure-tight seal at the threaded port
• Barbed ends accept 1/4 inch outer diameter flexible tubing for secure push-on retention
• Compact and lightweight at 0.0375 pounds, suitable for space-restricted installations
• Female branch tee configuration allows a single threaded port to feed or receive two barbed tube lines

Compatibility

Designed as an OEM-style replacement or service fitting for small-bore tubing assemblies that use 1/4 inch outer diameter flexible tubing with a 1/8 inch NPTF threaded connection point.

Installation Notes

Installation should be performed by a qualified plumber, HVAC technician, or instrumentation mechanic familiar with threaded fittings and tubing systems. Shut off and depressurize the system completely before removing or installing any fittings. Apply thread sealant or PTFE tape to the NPTF threads only if required by the application, as NPTF threads are designed for metal-to-metal sealing. Do not overtighten the threaded port, as brass fittings can crack under excessive torque.