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The MIDLAND INDUSTRIES 20237 is a brass compression union fitting designed to join two lengths of tubing with matching 3/8 inch outside diameter connections on both ends. Both ports use a flareless compression-style connection, making this a tool-accessible fitting for use in fuel, hydraulic, or fluid-handling line assemblies. Rated to 150 psi and certified for a temperature range of -40 to 150 degrees F, it handles demanding service conditions in a compact form. The brass construction resists corrosion and provides reliable seating for compression sleeves. At just 0.84 inches in length with a 0.62 inch hex, it fits in tight spaces without sacrificing grip for wrenching.
This fitting is used in residential and light commercial applications where two compression tubing runs must be joined or extended inline. Typical installations include refrigeration tubing, fuel gas supply lines, and general fluid distribution systems where flareless compression connections are specified. Plumbers, HVAC technicians, and gas service professionals use this type of union when a permanent or serviceable inline connection is required without brazing or soldering. The compact hex profile allows standard open-end or adjustable wrenches to seat the fitting properly.
Designed as an OEM-style replacement or new-installation fitting for flareless compression tubing systems using 3/8 inch outside diameter tubing in plumbing, HVAC, and fluid-handling applications.
Installation is performed by licensed plumbers or qualified HVAC and gas service technicians. Shut off all fluid or gas supply and depressurize the line before disassembly or installation. Hand-tighten the compression nut onto the fitting body before applying wrench torque to avoid cross-threading. Follow applicable IPC or IFGC code requirements for the specific service type when selecting compression fittings for gas or potable water applications.
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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