Merit Brass XNL117-08 Cored Square Head Plug 1/2 in Mnpt

Product Description

The MERIT BRASS XNL117-08 is a cored square head plug designed for use in threaded pipe systems where a pressure-rated, serviceable closure is required. The cored design allows the plug to accept a future pipe tap, making it useful in applications where additional branch connections may be needed downstream. Rated at 125 lb, this plug features a male NPT (MNPT) end style for direct threaded engagement with standard female NPT fittings. It is constructed from brass, which offers good corrosion resistance in water, gas, and low-pressure steam service. Licensed plumbers and pipefitters are the typical installers for this type of fitting.

This plug is suited for residential and light commercial plumbing, hydronic heating, and gas distribution systems where a 1/2 inch MNPT threaded closure is specified. The square head profile allows for wrench engagement during installation and removal. The rough finish is standard for this fitting class and is intended for functional use rather than exposed decorative applications. It is commonly installed at capped branch tees, pressure test ports, and dead-end service connections.

Key Features

• Cored head design accepts a future pipe tap for branch connections
• Square head profile provides positive wrench grip for installation and removal
• 1/2 inch MNPT threading engages standard female NPT fittings
• 125 lb pressure rating suitable for water, gas, and low-pressure steam service
• Brass construction provides corrosion resistance in common piping fluids
• Rough finish for functional, non-decorative installations

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 1/2 inch female NPT threaded pipe connections in residential and commercial plumbing and hydronic systems.

Installation Notes

Installation is performed by a licensed plumber or pipefitter using a standard pipe wrench or adjustable wrench on the square head. Apply thread sealant tape or pipe dope rated for the service fluid before threading the plug into the female fitting. Always depressurize and drain the system before removing or installing threaded plugs. Follow applicable IPC or IFGC code requirements for the specific piping application.

Technical Specifications

• Nominal Size: 1/2 inch
• End Style: MNPT (Male National Pipe Thread)
• Pressure Rating: 125 lb
• Material: Brass
• Finish: Rough
• Head Style: Cored Square Head
• Origin: Import

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: XNL117-08