Merit Brass XNL117-24 Cored Square Head Plug 1-1/2 in Mnpt

Product Description

The MERIT BRASS XNL117-24 is a cored square head plug used to close off pipe ends and ports in pressurized piping systems. Threaded with a male NPT (MNPT) end, this plug is rated at 125 lb pressure class and manufactured from rough brass for reliable sealing in plumbing, HVAC hydronic, and general piping applications. The nominal size is 1-1/2 inches. Licensed plumbers and pipefitters install this type of plug during system assembly, testing, and service work where a pressure-rated pipe closure is required.

This plug is suited for residential and light commercial piping installations where brass fittings are specified. Common applications include closing unused branch outlets, capping test ports, and plugging open ends during pressure testing on water, steam, and air distribution systems. The square head design allows for wrench engagement without specialized tooling, making installation straightforward in tight spaces.

Key Features

• 1-1/2 inch nominal size fits standard MNPT threaded pipe openings
• 125 lb pressure class rating for low-pressure water, steam, and air service
• Male NPT thread end style for direct engagement with female-threaded fittings or pipe
• Rough brass construction provides corrosion resistance in wet piping environments
• Square head design allows positive wrench grip during installation and removal
• Cored head configuration reduces material weight while maintaining thread integrity

Compatibility

Designed as an OEM-style replacement and standard-service fitting for 1-1/2 inch MNPT female-threaded pipe connections in brass-compatible plumbing and piping systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable IPC and local plumbing code requirements. Depressurize and drain the system before removing or installing any threaded pipe plugs. Apply an appropriate thread sealant or PTFE tape to the male threads before installation. Do not overtighten brass fittings, as brass threads are susceptible to galling and cracking under excessive torque.

Technical Specifications

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

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: XNL117-24