Merit Brass K417H-40 Hex Pipe Plug 2-1/2 in 304 Ss Mnpt

Product Description

The MERIT BRASS K417H-40 is a hex pipe plug designed to seal off pipe ends and unused threaded openings in piping systems. Constructed from 304 stainless steel, it offers solid corrosion resistance in wet, chemical, and outdoor service environments. The male NPT threaded connection engages standard tapered pipe threads for a pressure-rated seal up to 150 psi. At 1-11/16 inches in length and weighing 1.55 pounds, this plug is a dense, full-hex-body fitting suited for installations where a standard pipe wrench or socket is used for final make-up torque. Plumbers, pipefitters, and industrial maintenance technicians routinely specify this fitting in water, air, and compatible fluid systems.

This hex plug is used to close 2-1/2 inch NPT female threaded ports on pipe fittings, manifolds, valves, tanks, and equipment housings. It is appropriate for residential and commercial plumbing, process piping, compressed air headers, and general industrial applications where a stainless steel closure is required to resist corrosion or meet material compatibility requirements. The ISO standard designation indicates dimensional conformance to internationally recognized pipe fitting standards, making it suitable for both domestic and export system builds.

Key Features

• 304 stainless steel body for corrosion resistance in wet and chemical service environments
• Male NPT threaded end connection engages standard 2-1/2 inch female NPT ports
• 150 psi pressure rating for low- to medium-pressure piping applications
• Full hex head design accepts standard pipe wrenches and sockets for installation
• ISO-conforming dimensions for compatibility with standardized pipe fitting systems
• Compact 1-11/16 inch body length suits tight spaces and close-coupled assemblies

Compatibility

Designed as an OEM-style threaded closure for any 2-1/2 inch female NPT port in piping assemblies rated at or below 150 psi where 304 stainless steel material is acceptable.

Installation Notes

Installation is performed by plumbers or pipefitters following applicable IPC or ASME B31 piping code requirements. Depressurize and isolate the line before removing or installing any threaded plug. Apply a suitable thread sealant or PTFE tape to the male threads before make-up; do not overtighten, as stainless steel threads are susceptible to galling. Inspect the mating female port for damage or debris before final installation.