Winston Basics NL112-0602 Brass Reducing Coupling 3/8x1/8

Product Description

The WINSTON BASICS NL112-0602 is a brass reducing coupling designed to connect pipes of two different sizes in a single threaded fitting. It steps down from a 3/8-inch connection to a 1/8-inch connection, making it a compact solution for reducing line size within a plumbing or fluid-distribution assembly. Rated at 125 PSI, it carries a Lead-Free (LF) designation for compliance with potable-water applications and a Domestic (DOM) designation indicating domestic manufacture. Licensed plumbers and pipefitters install this fitting during new construction, retrofits, and repair work where a threaded size reduction is required.

This reducing coupling is suited for residential and light commercial plumbing systems where NPT threaded pipe connections must transition between 3/8-inch and 1/8-inch line sizes. It is commonly installed in water supply lines, compressed air distribution, and similar low-to-medium pressure fluid systems. Its Lead-Free rating makes it appropriate for installations subject to lead-free compliance requirements under state and federal drinking water regulations. The domestic designation may satisfy project specifications that require domestically manufactured fittings.

Key Features

• Brass construction provides corrosion resistance and durability in plumbing and fluid-handling applications
• Reducing coupling configuration steps down from 3/8-inch to 1/8-inch in a single fitting
• 125 PSI pressure rating suitable for standard residential and light commercial service
• Lead-Free (LF) designation supports compliance with potable-water installation requirements
• Domestic (DOM) designation for projects requiring domestically manufactured components
• Sold as a single unit for targeted replacement or new installation use

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard NPT threaded pipe systems requiring a 3/8-inch to 1/8-inch threaded reducing connection.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and depressurize the line before removing any existing fitting or installing this coupling. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly; do not overtighten, as brass fittings can crack under excessive torque. Inspect the connection for leaks after restoring pressure.