Midland Industries 63771B1 Barstock Half Coupling 1/4 in

Product Description

The MIDLAND INDUSTRIES 63771B1 is a barstock half coupling designed for high-pressure fluid and gas piping systems. It connects a 1/4 inch female pipe thread (FPT) port on one end to a 1/4 inch butt weld end on the other, allowing a threaded branch connection to be welded directly into a pipeline or vessel. Manufactured from 316 stainless steel, this fitting is rated for 1000 psi service and conforms to MSS SP-114 dimension standards. It is installed by licensed plumbers, pipefitters, and industrial maintenance technicians in applications where corrosion resistance and pressure integrity are critical.

This half coupling is suited for residential and commercial piping applications where a threaded outlet must be added to a welded stainless steel system. Typical uses include branch connections on process lines, steam or fluid distribution headers, and chemical handling systems where 316 stainless steel is specified for its resistance to corrosion and chloride environments. The FPT end accepts standard male pipe thread fittings, valves, or instrumentation ports.

Key Features

• 316 stainless steel construction for excellent corrosion resistance in demanding environments
• Rated to 1000 psi working pressure
• 1/4 inch FPT inlet accepts standard NPT male threaded fittings and instruments
• 1/4 inch butt weld outlet for direct weld-in installation to pipe or vessel wall
• Conforms to MSS SP-114 dimension standards for consistent fitment
• Lightweight at 0.04 pounds - minimal added load in tight installations

Compatibility

Designed as an OEM-style barstock half coupling for 1000 psi and above stainless steel piping systems conforming to MSS SP-114 dimensional standards.

Installation Notes

Installation requires a qualified pipefitter or welder for the butt weld end; follow applicable welding procedures and qualify welds per governing codes such as ASME B31.1 or B31.3. Depressurize and drain the system fully before cutting into any existing line. The FPT threaded connection should be made with an appropriate thread sealant compatible with the service fluid. Verify that 316 stainless steel is approved for the specific process media and temperature range before installation.