Midland Industries 20337 Bulkhead Union 1/4 in Tube Od Brass

Product Description

The MIDLAND INDUSTRIES 20337 is a brass bulkhead union fitting designed to create a secure, leak-resistant tubing connection through a panel or bulkhead wall. Rated to 150 psi and suitable for service from -40 to 150 degrees F, this flareless fitting accepts 1/4 inch tube OD on both sides. The 3/8-24 thread and 0.56 inch hex allow for installation with standard hand tools. Weighing just 0.06 pounds and measuring 1.25 inches in length, the compact profile suits tight panel installations. HVAC technicians, refrigeration mechanics, and plumbers install this fitting where a tubing run must pass cleanly through a partition or enclosure wall.

The 20337 is used in residential and light commercial applications wherever aluminum or copper tubing must transition through a bulkhead surface. Typical install scenarios include control panel pass-throughs, equipment enclosures, and instrument lines. The flareless, compression-style connection eliminates the need for flaring tools, reducing setup time in confined spaces. Its brass construction resists corrosion in moderate fluid and pneumatic service environments.

Key Features

• Rated to 150 psi working pressure for dependable performance in pneumatic and fluid lines
• Operating temperature range of -40 to 150 degrees F suits a wide range of service environments
• Flareless design accepts 1/4 inch tube OD on both sides without a flaring tool
• 3/8-24 thread with 0.56 inch hex for standard wrench installation
• Compatible with both aluminum and copper tubing
• Compact brass body at 0.06 pounds for use in space-constrained panel applications

Compatibility

Designed for use with aluminum and copper tubing with a 1/4 inch outside diameter. Suitable as a flareless bulkhead union in residential and light commercial HVAC, refrigeration, and instrumentation installations.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Before installation, isolate and depressurize the tubing system completely. Use a properly sized wrench on the 0.56 inch hex to avoid deforming the fitting body. Follow applicable codes, including relevant sections of the IFGC or IPC, and verify that the tubing material and fitting are compatible with the intended fluid or gas service before pressurizing.