Eaton 3152X4 Brass Hex Plug 1/4 Inch Mnptf

Product Description

The EATON 3152X4 is a straight brass hex plug with a 1/4 inch male MNPTF thread, designed to close off open pipe ends in fluid and pneumatic systems. Rated to 1,200 psi maximum working pressure and a temperature range of -65 degrees F to 250 degrees F, this fitting is built for industrial service environments. The hex drive head accepts a standard wrench for torque-controlled installation. Plumbers, pipefitters, and HVAC technicians use this type of plug to seal unused ports on manifolds, valves, and distribution headers. Brass construction provides corrosion resistance in water, oil, and low-pressure gas applications.

This hex plug is suited for residential and light commercial plumbing, HVAC refrigeration piping, hydraulic systems, and pneumatic lines where a reliable, pressure-rated pipe closure is required. Its straight fitting shape makes it a direct thread-in solution for any 1/4 inch MNPTF female port. The compact 5/8 inch overall length keeps the installed profile low in tight spaces.

Key Features

• 1/4 inch MNPTF male thread for direct installation into female NPT or NPTF ports
• 1,200 psi maximum working pressure rating
• Operating temperature range: -65 degrees F to 250 degrees F
• Brass construction resists corrosion in water, oil, and compatible gas service
• 9/16 inch hex drive for standard wrench installation
• Meets ASA, ASME, and SAE standards

Compatibility

Designed as an OEM-style replacement or service fitting for any system with a 1/4 inch MNPTF female pipe port requiring a pressure-rated hex plug closure.

Installation Notes

Installation is performed by licensed plumbers, pipefitters, or qualified HVAC technicians. Shut off system pressure and depressurize the line before removing or installing pipe plugs. Apply thread sealant tape or compound rated for the service fluid before threading in. Do not overtighten brass fittings; use a calibrated torque wrench and follow applicable ASME or IPC guidelines for threaded pipe connections.