Midland Metal 28181 Reducing Coupling 1/4 X 1/8 Fnpt Brass

Product Description

The MIDLAND METAL 28181 is a brass reducing coupling designed to connect two female NPT-threaded pipe sections of different sizes. It steps down from a 1/4 inches FNPT inlet to a 1/8 inches FNPT outlet, allowing plumbers, pipefitters, and HVAC technicians to adapt piping runs where thread size changes are required. At 0.97 inches in overall length, it is a compact fitting suited for tight installations. Brass construction provides reliable corrosion resistance and durability in a wide range of fluid and gas service applications, making it a standard choice in professional mechanical systems.

This reducing coupling is commonly used in residential and light commercial plumbing, gas distribution, compressed air lines, and HVAC refrigerant accessory piping where a threaded size reduction is needed inline. It is well suited for instrument connections, gauge ports, and branch line reductions. The FNPT threads on both ends accept standard NPT male-threaded fittings or adapters, fitting into typical pipe assembly workflows without special tooling.

Key Features

• Reduces from 1/4 inches FNPT to 1/8 inches FNPT in a single inline fitting
• Brass construction for corrosion resistance in gas, water, and air service
• Compact 0.97 inches overall length suits tight or confined piping spaces
• Standard NPT thread form for broad compatibility with common pipe systems
• Female threads on both ends for direct male NPT adapter or pipe nipple connections

Compatibility

Designed as an OEM-style replacement or new-installation fitting compatible with standard 1/4 inches and 1/8 inches NPT-threaded plumbing, HVAC, and gas piping systems.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or HVAC technician in accordance with applicable local codes and IFGC or IPC requirements. Shut off and depressurize the system completely before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male NPT threads being engaged, following the sealant manufacturer and code requirements for the service type. Do not overtighten brass fittings, as the material can crack under excessive torque.

Technical Specifications

• Inlet Thread Size: 1/4 inches FNPT
• Outlet Thread Size: 1/8 inches FNPT
• Overall Length: 0.97 inches
• Material: Brass
• Thread Type: NPT (Female both ends)

Standard Information

• Brand: MIDLAND METAL
• Manufacturer Part Number: 28181