Midland Industries MQ82-4 Bulkhead Union 1/4 in Brass

Product Description

The MIDLAND INDUSTRIES MQ82-4 is a brass bulkhead union fitting designed to pass a pneumatic or fluid line through a panel, wall, or enclosure while maintaining a secure, leak-free connection on both sides. Both ports accept 1/4 inch push-in tubing, allowing for fast, tool-free tube insertion. The nickel-plated body pairs with a nickel collet for corrosion resistance in demanding environments. The fitting measures 1.69 inches in length with a 0.68 inch hex, and its 1/2-20 thread allows it to be installed through standard panel knockouts. Rated for temperatures from -10 to 200 degrees F, the MQ82-4 is suited for use in compressed air, pneumatic control, and fluid distribution systems. HVAC technicians, plumbers, and industrial service pros install this type of fitting when routing lines through cabinet panels or equipment housings.

The MQ82-4 is used in residential and commercial applications where a pneumatic or fluid line must pass cleanly through a partition or enclosure wall. Typical installation scenarios include compressed air distribution panels, HVAC equipment cabinets, and pneumatic control enclosures. The push-in connection style on both sides speeds up installation and reduces the need for additional fittings or adapters. The brass and nickel-plated construction holds up in environments with moderate moisture, vibration, or chemical exposure.

Key Features

• Both ports accept 1/4 inch push-in tubing for tool-free, fast connections
• Nickel-plated brass body with nickel collet for enhanced corrosion resistance
• 1/2-20 thread for secure panel or bulkhead mounting
• 0.68 inch hex allows installation with a standard wrench
• Temperature rated from -10 to 200 degrees F for broad application range
• Compact 1.69 inch length minimizes panel depth requirements

Compatibility

Designed as an OEM-style push-to-connect bulkhead union for use with 1/4 inch tubing in pneumatic and fluid line applications requiring panel pass-through connections.

Installation Notes

This fitting is typically installed by HVAC technicians, plumbers, or industrial mechanics. Depressurize and isolate the system completely before removing or installing any fitting. Use the hex body to thread the fitting through the panel opening and tighten with a wrench to the panel nut - do not overtighten the push-in collet seats by torquing the tube end. Verify tubing is cut cleanly and fully seated after system pressure is restored.