Midland Industries 108036 Reducing Companion Flange 4x3 in

Product Description

The MIDLAND INDUSTRIES 108036 is a reducing companion flange designed to transition between a 4-inch threaded connection and a 3-inch threaded connection in iron piping systems. Constructed from ductile iron with a galvanized finish, this flange provides corrosion resistance in water and wastewater distribution, industrial piping, and mechanical systems. The flange carries a 125 lb pressure class rating at 150 psi and meets ASME B16.42/AWWA C110 and ASME B1.20.1 dimensional standards. With 8 bolt holes and a 0.94-inch flange thickness, it delivers a robust, leak-resistant connection. Installation is handled by licensed plumbers or pipefitters working on ferrous piping systems.

The 108036 is suited for residential and commercial piping applications where a reducing connection between 4-inch and 3-inch threaded iron pipe is required. Typical use cases include water main tie-ins, pump station connections, valve installations, and mechanical room piping assemblies. The galvanized finish makes it appropriate for exposed or mildly corrosive environments. Thread sizing follows the 4-8 x 3-8 standard per ASME B1.20.1, ensuring compatibility with standard NPT pipe threads in those sizes.

Key Features

• Reduces from 4-inch threaded to 3-inch threaded connection in a single fitting
• Ductile iron construction with galvanized finish for corrosion resistance
• 125 lb pressure class rated at 150 psi
• 8 bolt holes at 0.75-inch diameter with 7.5-inch hole center-to-center spacing
• Meets ASME B16.42/AWWA C110 and ASME B1.20.1 dimensional standards
• 0.94-inch flange thickness for structural integrity under pressure

Compatibility

Designed as an OEM-style replacement or new-installation companion flange for ductile iron threaded piping systems rated at 125 lb pressure class, conforming to ASME B16.42/AWWA C110 and ASME B1.20.1 standards.

Installation Notes

Installation should be performed by a licensed plumber or certified pipefitter in accordance with applicable mechanical and plumbing codes, including IPC requirements. Shut off and depressurize the piping system fully before removing any existing flange or fitting. Ensure mating flange faces are clean and flat, and use an appropriate gasket rated for the service conditions. Do not overtighten bolts unevenly; follow a cross-pattern torquing procedure using fasteners rated for the pressure class.