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The MIDLAND INDUSTRIES 20638C128 is a composite-body push-to-connect male connector designed to transition between a 12 mm push-to-connect tube connection and a 1/2-inch male BSP threaded port. This fitting allows fast, tool-free tube insertion on the push-to-connect side while threading directly into a BSP-ported valve, manifold, or equipment port on the other end. The composite construction keeps the fitting lightweight while maintaining reliable sealing performance in pneumatic and fluid handling applications. Plumbers, pipefitters, and mechanical contractors install this type of fitting in equipment rooms, process skids, and utility systems where metric tubing meets BSP-threaded ports.
This connector is suited for installations where 12 mm OD tubing must interface with 1/2-inch BSP male threaded equipment ports. Common applications include compressed air distribution, pneumatic control lines, and light fluid service in both residential and light commercial mechanical systems. The composite body makes it a practical choice where weight savings or corrosion resistance is a factor, such as in chemical-adjacent environments or where brass is restricted. A minimum order quantity of 1 makes it accessible for single-unit service calls as well as larger project pulls.
Designed for use with 12 mm OD tubing on the push-to-connect side and equipment or fittings with 1/2-inch male BSP threaded ports. Suitable for pneumatic and compatible fluid systems that accept composite push-to-connect fittings.
Installation should be performed by a licensed plumber, pipefitter, or qualified mechanical technician. Depressurize and isolate the system fully before removing or installing any fitting. Ensure tubing is cut cleanly and squarely and is free of burrs before insertion into the push-to-connect port to achieve a proper seal. Verify that BSP thread engagement meets applicable IPC or equipment manufacturer requirements and that the composite body material is compatible with the media and operating pressure of the system.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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