Value Collection W04-31131-B Pneumatic Hose Coupling

Product Description

The VALUE COLLECTION W04-31131-B is a quick connect plug-style pneumatic hose coupling designed for use in compressed air and pneumatic fluid transfer systems. Built from steel with a zinc finish, this coupling features a 3/8 inch male NPT (MNPT) thread and a 7/8 inch body diameter, making it a standard-duty component for connecting and disconnecting air lines quickly without tools. The zinc finish provides corrosion resistance in typical shop and industrial environments. HVAC technicians, plumbers, and general tradespeople install this type of coupling on compressors, pneumatic tools, and service equipment where fast, secure line connections are required.

This quick connect plug is suited for residential and light commercial pneumatic systems, including air compressor manifolds, pneumatic tool lines, and service vehicle air supply setups. The 3/8 inch hose inside diameter and MNPT thread configuration make it compatible with standard NPT-threaded fittings commonly found in shop and field service applications. It is sold individually and intended for direct installation into mating quick connect coupler bodies of the same thread size and coupling series.

Key Features

• Quick connect plug design allows fast tool-free line connection and disconnection
• 3/8 inch MNPT thread for compatibility with standard NPT-threaded ports and couplers
• 7/8 inch body diameter suited for standard quick connect coupler bodies
• Steel construction with zinc finish for durability and corrosion resistance
• 3/8 inch hose inside diameter for proper flow in typical pneumatic tool lines

Compatibility

Designed as an OEM-style replacement or direct-fit plug for pneumatic quick connect coupler systems using 3/8 inch MNPT threaded connections and standard 7/8 inch body diameter coupler bodies.

Installation Notes

Installation is typically performed by HVAC technicians, plumbers, or maintenance tradespeople familiar with pneumatic fittings. Always depressurize and bleed down the air line before removing or installing any pneumatic coupling. Apply thread sealant tape to the MNPT threads per manufacturer and applicable plumbing code requirements before threading into the receiving port. Do not overtighten; use an appropriately sized wrench and follow standard NPT hand-tight-plus-turns practice.