Midland Industries 62660 Square Head Plug 3in Npt Ss 150lb

Product Description

The MIDLAND INDUSTRIES 62660 is a cored square head plug designed to seal pipe ends in pressurized systems. Built from 304 stainless steel, it connects via a 3-inch male NPT thread and is rated for 150 lb pressure class service. The square head drive makes it compatible with standard wrenches for fast, reliable installation and removal. Conforming to ASME B1.20.1 dimensional standards, this plug delivers consistent thread fit and leak-free sealing across a wide range of media types. It is a practical choice for plumbers, pipefitters, and mechanical contractors working on air, water, oil, natural gas, or steam systems.

This plug is suited for residential and commercial piping applications where a 3-inch NPT pipe end must be capped or temporarily blanked. Common install scenarios include pressure testing, system isolation, and permanent service terminations. Its 304 stainless steel construction resists corrosion in wet, chemical, and high-temperature environments, making it appropriate for mechanical rooms, process piping, and utility systems where longevity and media compatibility are priorities.

Key Features

• 3-inch male NPT connection conforms to ASME B1.20.1 thread standards
• 150 lb pressure class rating suitable for air, water, oil, natural gas, and steam service
• 304 stainless steel construction provides corrosion resistance in demanding environments
• Square head drive accepts standard wrench or socket for installation and removal
• Cored design reduces weight while maintaining structural integrity at rated pressure

Compatibility

Compatible with air, water, oil, natural gas, and steam media systems. Designed as an OEM-style replacement or new-installation fitting for 3-inch 150 lb class NPT piping systems conforming to ASME B1.20.1 standards.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical and plumbing codes. Shut off and depressurize the system completely before installing or removing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly. Do not overtighten; wrench-tighten to snug engagement and verify for leaks before returning the system to service.