Midland Industries NT68-106VS Brass Air Brake Adapter

Product Description

The MIDLAND INDUSTRIES NT68-106VS is a brass male adapter with RTS (release tool sleeve) designed for air brake tubing systems. It connects 5/8 inch tube OD to a 3/8 inch male NPTF threaded port using a 13/16-18 thread form. Rated to 150 psi and suited for operating temperatures from -40 to 200 degrees F, this fitting is built for the pressure and thermal demands of commercial vehicle and heavy-equipment air brake plumbing. It is installed by fleet mechanics, brake system technicians, and heavy-duty equipment service professionals.

This adapter is intended for use with SAE J844 Type A and Type B NT nylon tubing in air brake applications. Typical installations include truck, trailer, and bus air brake lines where a nylon tube must transition to a male NPTF threaded port on a valve, compressor, tank, or actuator. The brass construction provides corrosion resistance and reliable sealing in pneumatic service environments. This fitting falls within the NAB Male Adapter category of MAF/USA Brass Fittings for air brake systems.

Key Features

• RTS (release tool sleeve) design for secure push-to-connect and controlled tube release
• 5/8 inch tube OD inlet to 3/8 inch male NPTF outlet transition
• 13/16-18 thread specification for precise thread engagement
• 150 psi pressure rating for air brake service
• Temperature range of -40 to 200 degrees F
• Brass construction for corrosion resistance in pneumatic environments

Compatibility

Designed for use with SAE J844 Type A and Type B NT nylon tubing in air brake plumbing applications.

Installation Notes

Installation should be performed by a qualified brake system technician or fleet mechanic. Depressurize the air system completely before removing or installing any air brake fittings. Ensure the NPTF threads are clean and that the correct thread sealant approved for pneumatic service is applied if required by the port specification. Verify tube end is cut squarely and fully seated before pressurizing the system.