Midland Industries 44671 Square Head Plug 1/4 Mpt Bronze

Product Description

The MIDLAND INDUSTRIES 44671 is a solid square head plug designed to seal off open pipe ends in bronze piping systems. Threaded with a 1/4-18 male pipe thread (MPT) connection, it installs into 1/4 inch female-threaded ports to provide a pressure-rated, leak-free termination. Rated at 125 lb pressure class and manufactured from bronze, this plug meets multiple dimensional and material standards including ASME B16.15, ASME B1.20.1, AWWA C800, WW-P-460C, and MSS-SP-106. At 0.69 inches in length with a 0.37 inch head size, it is a compact fitting suited for tight spaces. Plumbers, HVAC technicians, and pipefitters install this type of plug during system commissioning, testing, or permanent line termination.

This plug is well suited for residential and light commercial plumbing and piping applications where a 1/4 inch MPT bronze plug is required. It is commonly used to cap off unused ports on valves, manifolds, and distribution headers in water service, gas, and general-purpose piping systems. The square head drive allows installation and removal with a wrench, making it a practical choice for applications requiring periodic service access or final closure of test ports.

Key Features

• Solid bronze construction provides corrosion resistance in water and gas service applications
• 1/4-18 MPT thread conforms to ASME B1.20.1 for reliable seal engagement
• 125 lb pressure class rating suitable for residential and light commercial systems
• Square head design accepts standard wrench drive for positive installation torque
• Meets AWWA C800, ASME B16.15, WW-P-460C, and MSS-SP-106 dimensional standards
• Compact profile at 0.69 inches length and 0.37 inch head size for tight-quarter installs

Compatibility

Designed as an OEM-style bronze fitting for use in any 1/4 inch female MPT-threaded port requiring a solid plug termination in systems rated to 125 lb pressure class.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters. Shut off system pressure and drain the line before removing or installing any threaded plug. Apply an appropriate thread sealant or PTFE tape to the male threads before installation, following applicable IPC or IFGC code requirements for the service type. Do not overtighten bronze fittings, as the material is softer than ferrous pipe and susceptible to thread damage from excessive force.