Merit Brass BS115-0604 Brass Pipe Bushing 3/8x1/4 Mnpt Fnpt

Product Description

The MERIT BRASS BS115-0604 is a threaded brass pipe bushing designed to reduce a 3/8 inch male NPT connection down to a 1/4 inch female NPT port. It carries a Class 125 pressure rating and is constructed from brass, making it well suited for use in water, air, gas, and general fluid distribution systems. The MNPT x FNPT thread configuration allows this bushing to be installed directly into a female-threaded port or fitting without additional adapters. Plumbers, pipefitters, and HVAC technicians commonly use hex bushings like this one when connecting components of different pipe sizes within a system.

This bushing is a standard hex-style reducing fitting used in residential and light commercial piping systems. It is commonly installed in plumbing distribution lines, HVAC refrigerant accessory piping, compressed air systems, and industrial fluid lines wherever a 3/8 inch line must transition to a 1/4 inch female-threaded connection. Its compact size makes it practical in tight or confined piping runs where space between fittings is limited.

Key Features

• 3/8 inch MNPT to 1/4 inch FNPT reducing configuration for common pipe size transitions
• Threaded connection type for straightforward hand-tool installation
• Class 125 pressure rating suitable for general-purpose piping applications
• Brass construction provides corrosion resistance in water, air, and gas service
• Compact hex-body design fits standard open-end or adjustable wrenches

Compatibility

Designed as a standard-thread OEM-style replacement or new-installation fitting compatible with any 3/8 inch MNPT x 1/4 inch FNPT threaded pipe connection meeting Class 125 requirements in plumbing, HVAC, compressed air, or fluid distribution systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable local plumbing codes and ASME B1.20.1 thread standards. Shut off and depressurize the line completely before removing any existing fitting or installing this bushing. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly and tighten with a wrench to a snug, leak-free fit. Do not overtighten brass fittings, as brass threads can be damaged by excessive force.