Midland Industries 63433MS Reducing Coupling 316 Ss

Product Description

The MIDLAND INDUSTRIES 63433MS is a reducing coupling designed to connect two female NPT threaded pipe ends of different sizes within a single inline fitting. The larger port accepts a 1/2-in Female NPT connection using a 1/2-14 thread, while the smaller port accepts a 1/8-in Female NPT connection using a 1/8-27 thread. Constructed from 316 stainless steel, this coupling resists corrosion in demanding fluid and gas service environments. It carries a 150 lb pressure class rating. Plumbers, pipefitters, and industrial maintenance technicians install this fitting where a pipe run must step down from 1/2-in to 1/8-in service lines.

This reducing coupling suits residential and light commercial plumbing, instrumentation lines, compressed air systems, and chemical process piping where corrosion resistance and reliable threaded connections are required. The 316 stainless steel construction makes it appropriate for applications involving chlorides, mild acids, or other corrosive media that would degrade standard carbon steel or brass fittings. It is part of the SP-114 Fittings line and falls within the reducing couplings category of nipples and fittings.

Key Features

• 316 stainless steel construction for superior corrosion resistance in harsh service conditions
• 1/2-in Female NPT x 1/8-in Female NPT reducing configuration for inline size transitions
• 1/2-14 x 1/8-27 thread specification for standard NPT thread engagement
• 150 lb pressure class rating suitable for typical low-to-medium pressure service
• Compact profile at approximately 1.4 inches in height and 1.1 inches in length

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 1/2-in Female NPT x 1/8-in Female NPT reducing coupling applications in plumbing, instrumentation, and industrial piping systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter following applicable IPC or IFGC guidelines depending on the service medium. Depressurize and isolate the line completely before removing or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to male threads mating into this coupling. Do not over-tighten; excessive torque can crack stainless fittings or distort threads.