Merit Brass C102-04 Brass Coupling 1/4 in Fnpt Class 125

Product Description

The MERIT BRASS C102-04 is a Class 125 brass pipe coupling with female NPT (FNPT) connections on both ends. It accepts 1/4 inch pipe threads and is used to join two sections of pipe in a straight run. The all-brass body provides corrosion resistance suitable for water, air, and general fluid service applications. This fitting is sized for 1/4 inch pipe and follows standard NPT thread form, making thread engagement predictable and consistent. Plumbers, pipefitters, and HVAC technicians install this type of coupling during new construction and repair work across a wide range of piping systems.

This coupling is suited for residential and light commercial plumbing, HVAC, and pneumatic piping systems where a threaded brass fitting is required. Class 125 ratings cover the pressure and temperature ranges common in water supply, compressed air, and hydronic heating lines. The FNPT x FNPT configuration makes it a straight coupling with no change in direction or pipe size, used wherever two threaded male pipe ends need to be connected inline.

Key Features

• 1/4 inch fitting size with FNPT x FNPT end connections
• Class 125 pressure rating suitable for water, air, and general fluid service
• Brass construction offers corrosion resistance and reliable thread integrity
• Standard NPT thread form for compatibility with common threaded pipe and fittings
• Compact and lightweight at 0.1 pounds for easy handling in tight spaces

Compatibility

Designed as an OEM-style replacement and standard-use fitting for 1/4 inch NPT threaded pipe systems in plumbing, HVAC, and compressed air applications.

Installation Notes

This fitting is installed by a licensed plumber or pipefitter using a pipe wrench and appropriate thread sealant or PTFE tape on the male threads before engagement. Shut off and depressurize the line before removing or installing any threaded fitting. Do not overtighten brass fittings, as the material can crack under excessive torque. Installation should conform to applicable local plumbing codes and ASME B1.20.1 NPT thread standards.