Merit Brass 3417HD-24 Hex Plug 1-1/2 in 304 Ss Mnpt

Product Description

The MERIT BRASS 3417HD-24 is a heavy-duty hex plug pipe fitting manufactured from 304 and 304L stainless steel. Designed to close off the end of a threaded pipe or fitting, this hex plug uses a male NPT (MNPT) threaded connection and is rated to 3,000 psi. The 1-1/2 inch fitting size makes it well-suited for mid-to-large bore pipe runs. Plumbers, pipefitters, and industrial maintenance technicians install this type of plug to cap unused branch ports, seal off test points, or permanently close threaded outlets during system assembly or repair.

This hex plug is appropriate for residential and commercial plumbing, industrial piping, and process systems where stainless steel corrosion resistance is required. The 304/304L dual-grade material designation means it meets both standard and low-carbon stainless requirements, broadening its use across applications where weld-decay resistance or sanitary service conditions are a consideration. It is commonly installed in water supply, chemical transfer, and mechanical piping systems where a leak-tight threaded closure is needed.

Key Features

• 1-1/2 inch MNPT threaded connection for direct engagement with female NPT ports
• 3,000 psi pressure rating suitable for high-pressure pipe systems
• 304/304L stainless steel construction provides corrosion resistance in wet and chemical environments
• Hex head design allows standard wrench installation without special tooling
• Low-carbon 304L grade supports use in applications requiring weld-decay resistance

Compatibility

Designed as an OEM-style threaded pipe plug for use in any 1-1/2 inch female NPT-threaded port or fitting in plumbing, industrial, or mechanical piping systems.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters. Depressurize and drain the system completely before removing or installing any threaded pipe plug. Apply thread sealant or PTFE tape to the male threads per applicable IPC or IFGC guidelines before torquing into the female port. Inspect threads for damage before installation to ensure a leak-free seal.