Merit Brass 3617D-24 Square Head Plug 1-1/2 in 316 Ss Mnpt

Product Description

The MERIT BRASS 3617D-24 is a square head pipe plug rated for high-pressure service in corrosion-resistant piping systems. Machined from 316 and 316L stainless steel, this plug accepts a standard wrench or socket drive on its square head for reliable installation and removal. With a pressure rating of 3,000 psi and a male NPT (MNPT) end connection, it seals threaded pipe openings in demanding industrial, mechanical, and process piping applications. Plumbers, pipefitters, and mechanical contractors install this type of fitting to cap off unused branch outlets or temporarily close lines during system testing and maintenance.

This square head plug is suited for use in residential and commercial piping systems where corrosion resistance is a priority, including chemical service, marine environments, food processing, and stainless steel process piping. The 316 and 316L alloy provides improved resistance to chloride-induced corrosion compared to standard 304-grade stainless fittings. It threads directly into any standard 1-1/2-inch female NPT port and is appropriate for liquid and gas service within its rated pressure envelope.

Key Features

• 316 and 316L stainless steel construction for superior corrosion resistance
• 3,000 psi pressure rating suitable for high-pressure piping systems
• 1-1/2-inch MNPT end connection threads into standard female NPT ports
• Square head drive allows wrench or socket installation without slippage
• Dual-certified 316 and 316L material grade for broader code compliance

Compatibility

Designed as an OEM-style replacement or standard service fitting for 1-1/2-inch female NPT threaded pipe connections in stainless steel or mixed-material piping systems rated to 3,000 psi.

Installation Notes

Installation is performed by licensed plumbers or pipefitters in accordance with applicable piping codes such as the IPC or ASME B31 standards. Depressurize and isolate the system before removing or installing any threaded plug. Apply an appropriate thread sealant or PTFE tape rated for the service media before threading the plug into the female port. Do not exceed the 3,000 psi pressure rating of the fitting.