Merit Brass XNL117-16 Cored Square Head Plug 1 in Mnpt

Product Description

The MERIT BRASS XNL117-16 is a cored square head plug designed for use in pipe systems requiring a threaded closure at a 1-inch nominal male NPT connection. Rated at 125 lb, this plug is machined from brass with a rough finish, making it well suited for moderate-pressure plumbing, HVAC, and light industrial piping applications. The square head design allows for standard wrench engagement during installation and removal. Licensed plumbers and pipe fitters typically install this fitting as part of pressure testing, system capping, or permanent line termination work.

This plug fits 1-inch nominal MNPT pipe connections and is appropriate for use in residential and light commercial systems where brass fittings are specified. Common applications include capping unused branch lines, isolating sections of a system during service, and pressure testing. The 125 lb pressure rating suits standard low-to-moderate-pressure water and gas service lines where brass is a compatible material. Import construction meets general-purpose fitting requirements for non-critical service environments.

Key Features

• 1-inch nominal MNPT end style for direct threaded installation into female NPT ports
• 125 lb pressure rating suitable for standard plumbing and HVAC applications
• Brass construction provides corrosion resistance in water and compatible fluid service
• Square head design allows full wrench engagement for secure make-up and removal
• Rough finish for standard service use without additional machining required

Compatibility

Designed as an OEM-style replacement or standard service fitting for 1-inch female NPT ports in residential and light commercial plumbing, HVAC, and piping systems rated for brass fittings at 125 lb.

Installation Notes

Installation is performed by a licensed plumber or pipe fitter in accordance with applicable IPC and IFGC guidelines. Shut off system pressure and drain the affected line before threading this plug into place. Apply appropriate thread sealant or PTFE tape to the male threads before make-up. Do not over-torque, as brass fittings can crack under excessive force.

Technical Specifications

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

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: XNL117-16