Eaton 3400X4W Brass 90 Degree Street Elbow 1/4 in Mnptf

Product Description

The EATON 3400X4W is a brass 90-degree street elbow designed for industrial pipe systems requiring a compact directional change in a single threaded connection. It combines a 1/4 inch male NPTF thread (MNPTF) with a 1/4 inch female NPTF thread (FNPTF) using short-thread classification, allowing the fitting to connect directly into a port or tee without a nipple. Rated to 1,200 psi maximum working pressure and suitable for temperatures ranging from -65 degrees F to 250 degrees F, this fitting handles demanding fluid and pneumatic service conditions. It is installed by licensed plumbers, pipefitters, and industrial maintenance technicians wherever a 90-degree street turn is needed in a compact space.

This fitting is suited for industrial fluid power, compressed air, hydraulic, and general-purpose piping systems. The MNPTF x FNPTF short-thread configuration makes it a direct port-entry elbow, commonly used in manifolds, valve bodies, cylinders, and instrumentation headers. It is appropriate for both new construction and replacement service in light industrial and commercial applications where brass construction is acceptable for the media and pressure class.

Key Features

• 90-degree street elbow configuration for in-line directional change without a separate nipple
• 1/4 inch MNPTF x 1/4 inch FNPTF short-thread connection type
• 1,200 psi maximum working pressure rating
• Operating temperature range: -65 degrees F to 250 degrees F
• Brass construction for corrosion resistance in fluid and pneumatic service
• Meets ASME and SAE J30239 standards

Compatibility

Designed as an OEM-style replacement or new-installation fitting for industrial piping systems using 1/4 inch NPTF threaded connections rated at or below 1,200 psi.

Installation Notes

Installation should be performed by a licensed pipefitter or plumber in accordance with applicable mechanical and plumbing codes. Depressurize and isolate the system completely before removing or installing any fittings. NPTF threads are designed for a pressure-tight seal on the threads themselves, but applying an appropriate thread sealant compatible with the system media is standard practice. Do not overtighten; hand-snug plus the appropriate number of turns per trade practice is sufficient to avoid cracking the brass body.