Midland Industries 706121-08 Cored Hex Plug 1/2 Mpt Brass

Product Description

The MIDLAND INDUSTRIES 706121-08 is a cored hex head plug designed for use in brass or steel pipe systems requiring a 1/2-inch male pipe thread (MPT) connection. Constructed from lead-free brass, this plug meets contemporary plumbing code requirements for potable water and general fluid-handling applications. The hex head design allows standard wrench tightening, and the cored body provides a partial passageway commonly used for pressure testing, gauging, or future branch connections. The 1/2-14 thread specification ensures consistent engagement with standard NPT-compatible fittings and pipe. At 0.065 pounds, this is a compact fitting suited for tight installation spaces.

This plug is used in residential and light commercial plumbing, HVAC hydronic systems, and industrial piping where a 1/2-inch MPT threaded port needs to be capped or temporarily serviced. The cored design is especially useful in pressure test setups or installations where a gauge port may be needed later. It is compatible with both brass and steel pipe, making it a versatile choice across mixed-material systems. Licensed plumbers and pipefitters are the primary installers, though HVAC technicians frequently use similar fittings in hydronic and refrigerant-adjacent piping work.

Key Features

• Lead-free brass construction meets current plumbing codes for potable water applications
• Cored hex head design accepts standard wrenches for controlled torque installation
• 1/2-14 NPT-compatible thread fits standard 1/2-inch MPT connections
• Compatible with both brass and steel pipe systems
• Compact dimensions suitable for confined fitting spaces

Compatibility

Designed for use with brass or steel pipe systems using a 1/2-inch MPT threaded connection. Suitable as an OEM-style replacement or new-installation fitting in standard NPT piping assemblies.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter. Shut off the water supply and depressurize the line before threading the plug into the fitting. Apply thread sealant tape or approved pipe dope to the male threads prior to installation. Follow all applicable local plumbing codes, including IPC requirements for lead-free fittings in potable water systems.