Merit Brass K617H-40 Hex Plug 2-1/2 in 316 Ss Mnpt

Product Description

The MERIT BRASS K617H-40 is a hex plug pipe fitting machined from 316 stainless steel and designed to cap or close off a 2-1/2-inch male NPT threaded pipe end. At 150 psi pressure rating and built to ISO standards, this plug is suited for systems where corrosion resistance and reliable sealing are critical. The 316 stainless steel construction offers superior resistance to chlorides and acidic media compared to 304 SS, making it a common choice in chemical, marine, food processing, and industrial piping systems. Plumbers and pipefitters install this fitting when terminating or capping lines during system assembly, testing, or service.

This hex plug is used in both commercial and industrial piping applications where a threaded, pressure-rated closure is required. The MNPT end connection allows for direct installation into a female NPT threaded port or pipe end. Its hex head design accepts a standard wrench for proper torque application, making installation straightforward in tight spaces. Typical applications include process piping, fluid distribution manifolds, plumbing stub-outs, and hydraulic or pneumatic test points where a durable stainless plug is required.

Key Features

• 316 stainless steel construction for strong resistance to corrosion and chloride exposure
• 2-1/2-inch MNPT threaded end connection for direct engagement with female NPT fittings
• 150 psi pressure rating suitable for low-to-medium pressure piping systems
• Hex head design allows wrench tightening for a secure, leak-resistant seal
• Meets ISO standards for dimensional consistency and quality
• Compact body at 1-11/16 inches in length for use in confined spaces

Compatibility

Designed as an OEM-style threaded pipe fitting compatible with standard 2-1/2-inch female NPT threaded ports and pipe ends in 150-class piping systems.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable plumbing codes such as the IPC. Depressurize and drain the line completely before removing or installing any threaded pipe fitting. Apply an appropriate thread sealant or PTFE tape rated for the media and pressure involved. Do not over-tighten; use only the hex head with a properly sized wrench to avoid damaging the threads.