Midland Industries 640806C Dot Reducing Union Tee

Product Description

The MIDLAND INDUSTRIES 640806C is a D.O.T.-compliant reducing union tee designed for push-to-connect air brake and pneumatic plumbing applications. It features a composite body construction rated to 145 psi with an operating temperature range of -40 to 140 degrees F. Two 1/2-inch push-to-connect ports and one 3/8-inch push-to-connect port allow a single inline connection point where a branch line reduces in diameter. Licensed plumbers, fleet maintenance technicians, and pneumatic system installers work with this fitting in commercial vehicle and industrial service environments.

This fitting is suited for air brake supply lines, pneumatic control circuits, and compressed-air distribution systems requiring a D.O.T.-rated component. The push-to-connect design allows tool-free tube insertion and is appropriate for both new installations and service replacements in applications where tube sizes differ between the main run and the branch. The composite body keeps overall weight low without sacrificing pressure performance within the rated range.

Key Features

• D.O.T.-compliant composite body construction rated for air brake service
• 145 psi maximum working pressure
• Operating temperature range of -40 to 140 degrees F
• Push-to-connect on all three ports - no tools required for tube insertion
• Reducing configuration: two 1/2-inch ports and one 3/8-inch port in a single tee body
• Compact profile measuring 2.25 inches in length, 1.55 inches in width, and 0.85 inches in height

Compatibility

Designed as a D.O.T.-rated replacement or new-installation fitting for composite push-to-connect pneumatic and air brake plumbing systems using 1/2-inch and 3/8-inch tubing.

Installation Notes

Installation should be performed by a qualified technician familiar with D.O.T. air brake regulations and pneumatic system service procedures. Depressurize the entire air system and verify zero residual pressure before disconnecting or inserting any push-to-connect fitting. Ensure tubing ends are cut cleanly and squarely and that tube OD is within the fitting's specified range before insertion. Reference applicable Federal Motor Carrier Safety Administration (FMCSA) and D.O.T. standards for air brake system repair requirements.