Eaton 3200X6X4 Pipe Adapter 3/8 Female 1/4 Male Mnptf

Product Description

The EATON 3200X6X4 is a straight pipe adapter designed to connect a 1/4 inch male NPT tapered fitting (MNPTF) to a 3/8 inch female NPT tapered fitting (FNPTF). It allows technicians to step up thread sizes inline without changing direction or adding bends. Rated to 1,200 psi maximum working pressure and suitable for temperatures ranging from -65 degrees F to 250 degrees F, this adapter is built for demanding hydraulic, pneumatic, and fluid system applications. Licensed plumbers, pipefitters, and HVAC technicians routinely use adapters of this type when transitioning between component ports of differing thread sizes on compressed air, oil, fuel, or water lines.

This adapter is appropriate for residential and light commercial system service as well as industrial plumbing and hydraulic installations. Its straight configuration makes it a practical solution when space is limited and a direct inline thread conversion is required. The fitting installs wherever a 1/4 inch male NPT port must be connected to a 3/8 inch female NPT line or manifold port. Common applications include air compressor lines, hydraulic power units, lubrication systems, and HVAC refrigerant or fluid circuit connections where NPT fittings are specified.

Key Features

• Steps up from 1/4 inch male NPT to 3/8 inch female NPT in a straight inline profile
• Rated to 1,200 psi maximum working pressure for use in high-pressure fluid and pneumatic systems
• Wide temperature range: -65 degrees F to 250 degrees F
• 7/8 inch hex size for standard wrench installation
• Overall length of 1.25 inches for compact inline fitment
• Meets ASA, ASME, and SAE 130139 standards

Compatibility

Designed as an OEM-style replacement adapter for any system requiring a straight MNPTF x FNPTF thread conversion from 1/4 inch male to 3/8 inch female NPT tapered connections.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or HVAC technician. Shut off and depressurize the system completely before removing or installing any fitting. Apply an appropriate thread sealant or PTFE tape to the male threads in accordance with the applicable system requirements and local plumbing or mechanical codes. Do not over-tighten; use the hex flats and a calibrated wrench rather than gripping the body of the fitting.