Midland Industries 621200 Dot Brass Ptc Union 3/4 in

Product Description

The MIDLAND INDUSTRIES 621200 is a Department of Transportation (DOT) approved brass union fitting designed for 3/4-inch push-to-connect (PTC) connections on both ends. It provides a fast, tool-free way to join two sections of tubing in pneumatic and fluid transfer systems that require DOT-rated components. Rated to 150 psi and capable of handling temperatures from -40 to 200 degrees F, this union handles demanding service conditions. The brass body resists corrosion and holds up in both indoor and outdoor installations. Licensed plumbers, pipefitters, and pneumatic system technicians are the primary installers.

This fitting is used in compressed air lines, brake system tubing, and other pneumatic or fluid lines where DOT compliance is required. Its push-to-connect design makes it well suited for repair and retrofit work where fast reconnection without soldering or threading is an advantage. Residential and light commercial mechanical rooms, fleet maintenance shops, and industrial pneumatic installations are all common application environments. The union configuration allows technicians to disconnect and reconnect tubing runs without cutting or reworking the line.

Key Features

• DOT-approved construction for use in regulated pneumatic and brake-line applications
• Push-to-connect on both ends - no soldering, threading, or special tooling required
• Brass body provides corrosion resistance and durability in harsh environments
• Rated to 150 psi working pressure
• Wide temperature range: -40 to 200 degrees F
• Compact profile - 2.15 inches tall, 0.95 inches in length, 1 inch wide

Compatibility

Designed as an OEM-style DOT brass push-to-connect union for 3/4-inch tubing in pneumatic and fluid transfer systems requiring Department of Transportation rated fittings.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or pneumatic system technicians. Depressurize and isolate the line completely before removing or installing any fitting. Ensure tubing ends are cut cleanly and squarely and are free of burrs before inserting into the push-to-connect ports. Follow all applicable local codes and DOT regulations governing the system being serviced.