Merit Brass C112-1208 Brass Reducing Coupling 3/4x1/2 Fnpt

Product Description

The MERIT BRASS C112-1208 is a brass pipe reducing coupling designed to connect two female-threaded pipe ends of different sizes in a single inline fitting. It transitions from a 3/4-inch FNPT inlet to a 1/2-inch FNPT outlet, making it a standard solution for reducing pipe diameter in threaded plumbing and piping systems. Rated at Class 125, this coupling handles typical low-to-medium pressure service conditions found in residential and light commercial installations. Plumbers and pipefitters install this fitting when downsizing a supply line or adapting an existing run to a smaller branch or fixture connection.

This reducing coupling is suited for use in water supply piping, compressed air lines, and general fluid service applications where FNPT threaded connections are specified. Its compact inline form factor fits into tight spaces where back-to-back fittings or bushings would add unnecessary length. The Class 125 pressure rating aligns with standard brass fitting specifications for potable water, hydronic heating, and similar low-pressure systems common in residential construction and light commercial retrofit work.

Key Features

• Reduces from 3/4-inch FNPT to 1/2-inch FNPT in a single inline fitting
• Fully threaded FNPT x FNPT end connections for standard pipe assembly
• Class 125 pressure rating suitable for low-to-medium pressure service
• Brass construction provides corrosion resistance in water and air service
• Compact reducing coupling profile minimizes added run length

Compatibility

Designed as an OEM-style replacement and standard-use fitting for threaded brass piping systems requiring a 3/4-inch to 1/2-inch FNPT reducing connection in Class 125 service.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and local plumbing codes. Shut off and depressurize the supply line before removing or installing any threaded fitting. Apply an approved thread sealant or PTFE tape to the male threads being engaged, and tighten to hand-tight plus the number of turns specified by the sealant manufacturer. Do not overtighten brass fittings, as the material can crack under excessive torque.