Merit Brass C111-06 Brass Pipe Coupling 3/8 in Fnpt Class 125

Product Description

The MERIT BRASS C111-06 is a brass pipe coupling designed for joining two sections of threaded pipe in a straight-line connection. It features female National Pipe Taper (FNPT) threads on both ends, making it compatible with standard NPT-threaded pipe and fittings. Rated at Class 125, this coupling suits low-to-medium pressure plumbing and piping applications. The 3/8 inch fitting size is common in residential and light commercial supply lines, instrumentation runs, and mechanical systems. Licensed plumbers and pipefitters install this type of fitting when extending or repairing threaded pipe runs. Brass construction provides corrosion resistance and durability in wet service conditions.

This coupling is well suited for use in water supply, compressed air, and general-purpose piping systems where threaded connections are specified. The 3/8 inch size is frequently found in branch lines, fixture supply connections, and instrumentation tubing in both residential and light commercial settings. It is a standard repair and installation component stocked by plumbing contractors and mechanical trades.

Key Features

• FNPT x FNPT threaded ends for standard NPT pipe connections
• 3/8 inch fitting size fits common branch and supply line configurations
• Class 125 pressure rating suits general-purpose plumbing and piping service
• Brass material provides corrosion resistance in wet and humid environments
• Compact, lightweight fitting at 0.15 pounds

Compatibility

Designed as an OEM-style replacement and standard fitting for threaded NPT piping systems in residential and light commercial plumbing and mechanical applications.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters following applicable IPC and local plumbing code requirements. Shut off and depressurize the supply line before disassembling any threaded connection. Apply thread sealant tape or pipe dope to the male NPT threads before making up the joint. Do not overtighten threaded brass fittings, as excessive force can crack the fitting body.