Eaton 3400X8 Brass 90 Street Elbow 1/2 in Mnptf Fnptf

Product Description

The EATON 3400X8 is a brass 90-degree street elbow designed for industrial pipe systems requiring a compact directional change in a single fitting. It combines a 1/2-inch male NPT thread (MNPTF) on one end with a 1/2-inch female NPT thread (FNPTF) on the other, allowing a direct connection without a coupling. Rated to 1,200 psi maximum working pressure and suitable for temperatures from -65 degrees F to 250 degrees F, this fitting handles demanding fluid and gas line applications. At 0.29 pounds, it is a dense, solid brass component built for long service life in high-pressure environments.

This street elbow is used in industrial plumbing, hydraulic, and pneumatic piping systems where space is limited and a 90-degree turn is needed at a threaded connection point. Typical applications include compressed air lines, water distribution headers, oil lines, and general industrial fluid transfer. It is sized for 1/2-inch pipe and suits both new installations and repair or retrofit work in commercial and industrial facilities. Licensed plumbers, pipefitters, and industrial maintenance technicians are the primary installers of this fitting type.

Key Features

• 90-degree street elbow configuration eliminates the need for a separate coupling at direction changes
• 1/2-inch MNPTF x 1/2-inch FNPTF thread configuration for direct in-line or branch connections
• 1,200 psi maximum working pressure rating for high-pressure fluid and gas systems
• Operating temperature range of -65 degrees F to 250 degrees F
• Solid brass construction for corrosion resistance in wet and industrial environments
• Meets ASME and SAE 130239 standards

Compatibility

Designed as an OEM-style replacement or new-install fitting for 1/2-inch NPT threaded pipe systems in industrial, commercial, and mechanical applications.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter following applicable IPC or IFGC guidelines. Shut off and depressurize the system completely before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly and tighten to snug plus a controlled number of turns by hand and wrench — do not overtighten brass threads, as the material can crack under excessive torque. Inspect threads on mating components for damage before assembly.