Cerrobrass 119A-BA Pipe Coupling 1/4x1/8 Fnptf Brass

Product Description

The CERROBRASS 119A-BA is a brass reducing pipe coupling with female National Pipe Taper Fuel (NPTF) threads on both ends, sized at 1/4 inch by 1/8 inch. It is designed to connect two sections of pipe of different diameters within a pressurized fluid or gas system. The coupling carries a maximum working pressure of 1,200 psi and is constructed from solid brass, offering good corrosion resistance in a wide range of service environments. Plumbers, pipefitters, and industrial maintenance technicians are the primary installers of this type of fitting.

This coupling is suited for use in industrial, commercial, and residential piping systems where a threaded reduction between a 1/4 inch and 1/8 inch line is required. Typical applications include compressed air distribution, hydraulic lines, fuel gas supply, and water service piping where NPTF thread engagement is specified for a pressure-tight dry-seal connection. The FNPTF connection type ensures a leak-resistant seal through thread interference fit rather than relying on sealant tape alone, though thread sealant is commonly applied in practice.

Key Features

• Reducing coupling connects 1/4 inch female thread to 1/8 inch female thread
• NPTF (National Pipe Taper Fuel) thread standard provides a dry-seal pressure-tight connection
• Maximum working pressure of 1,200 psi
• Solid brass construction for corrosion resistance in fluid and gas service
• FNPTF connection type on both ports
• Compact form factor suitable for tight installation spaces

Compatibility

Designed as an OEM-style replacement or new-installation fitting for any piping system requiring a 1/4 inch by 1/8 inch FNPTF reducing coupling rated to 1,200 psi.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter in accordance with applicable plumbing and mechanical codes such as the IPC or IFGC. Depressurize and isolate the affected line before removing or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to the male threads mating into this fitting unless the system specifies a dry-seal engagement. Do not overtighten brass fittings, as the material can crack under excessive torque.