Eaton 3950X4 Brass Female Cross 1/4 Inch Fnptf

Product Description

The EATON 3950X4 is a brass female cross fitting designed for industrial pipe systems requiring reliable four-way flow distribution. Rated to a maximum working pressure of 5000 psi and a maximum working temperature of 250 degrees F, this fitting handles demanding fluid and pneumatic service. All four ports feature 1/4 inch FNPTF (female National Pipe Taper Fuel) threads, providing a secure, leak-resistant connection. Licensed plumbers, pipefitters, and industrial mechanics install this type of fitting where a single line must branch in three directions simultaneously. The all-brass construction resists corrosion and holds up in both wet and dry service environments.

This fitting is suited for use in hydraulic, pneumatic, fuel, and general-purpose fluid systems across industrial, commercial, and heavy-duty residential applications. It is appropriate in any installation where a 1/4 inch FNPTF cross connection is required — such as instrumentation lines, compressed air distribution, fuel delivery manifolds, or hydraulic control circuits. The FNPTF thread standard ensures compatibility with standard tapered pipe thread assemblies and meets ASA, ASME, and SAE standards.

Key Features

• All four ports threaded to 1/4 inch FNPTF for consistent four-way connection
• 5000 psi maximum working pressure for high-demand industrial service
• Operating temperature range of -65 degrees F to 250 degrees F
• Brass construction provides corrosion resistance and machinability
• Meets ASA, ASME, and SAE standards for pipe fitting applications
• Compact cross geometry enables inline branching without additional adapters

Compatibility

Designed as an OEM-style replacement for industrial brass female cross fittings with 1/4 inch FNPTF thread connections in hydraulic, pneumatic, fuel, and fluid distribution systems.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or industrial mechanic. Depressurize and isolate the system completely before removing or installing any pipe fitting. Apply an appropriate thread sealant rated for the service fluid — confirm compatibility with brass and the working pressure before use. Torque to the fitting manufacturer and system design specifications; do not over-tighten, as this can crack the fitting body or distort threads.