Midland Industries 660806 Brass Straight Connector 1/2in Od X 3/8in

Product Description

The MIDLAND INDUSTRIES 660806 is a brass straight connector designed for push-to-connect tubing applications in compressed air, pneumatic, and fluid transfer systems. It joins a 1/2-inch tube OD on one end to a 3/8-inch female NPTF (FNPTF) threaded port on the other, making it a practical inline transition fitting. Rated to 150 psi and built to handle temperatures from -40 to 200 degrees F, this connector meets D.O.T. brass push-to-connect standards. The 7/8-inch hex body allows for standard wrench installation. Thread specifications are 1/2-14 on the tube side and 3/8-18 on the FNPTF side. Licensed plumbers, pipefitters, and HVAC technicians are the typical installers.

The 660806 suits residential and light commercial installations where a push-to-connect brass fitting is needed to transition from flexible tubing to an FNPTF-threaded port. Common applications include compressed air lines, pneumatic control circuits, and fluid supply connections where a secure, leak-resistant inline fitting is required. The push-to-connect end accepts 1/2-inch OD tubing without additional tools for the tube insertion step, while the female threaded end connects directly to a mating male NPT fitting or valve body.

Key Features

• Push-to-connect 1/2-inch tube OD end for fast, tool-free tube insertion
• 3/8-inch FNPTF threaded end for secure connection to male NPT ports
• Brass construction for corrosion resistance in air and fluid service
• 150 psi working pressure rating
• Wide service temperature range: -40 to 200 degrees F
• 7/8-inch hex body for standard wrench engagement during installation

Compatibility

Designed as a D.O.T.-style push-to-connect brass fitting for use with 1/2-inch OD tubing and 3/8-inch male NPT-threaded ports in compressed air, pneumatic, and compatible fluid systems.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or HVAC technician. Depressurize and isolate the line completely before removing any existing fitting or inserting this connector. Use the 7/8-inch hex with an appropriately sized wrench to tighten the threaded end; apply thread sealant or tape to the FNPTF threads as required by local code. Ensure tubing is cut cleanly and deburred before inserting into the push-to-connect end to maintain a proper seal.