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The MIDLAND INDUSTRIES 21084 is a single mini barb bulkhead union designed to create a secure, leak-resistant through-wall connection in fluid handling systems. Constructed from brass, this fitting accepts 1/2-inch mini barb connections on both sides and is rated for a maximum operating pressure of 150 psi. It accommodates plastic tubing with a 3/8-inch inside diameter and handles temperatures ranging from -65 to 90 degrees F. Plumbers, HVAC technicians, and fluid system installers use this fitting when routing tubing through panels, enclosures, or tank walls where a sealed bulkhead passage is required.
The 21084 is suited for low-pressure fluid and pneumatic tubing runs in residential and light commercial applications. Its bulkhead configuration allows plastic tubing to pass cleanly through a drilled panel or wall without requiring additional fittings on each side. The mini barb end connections provide a reliable grip on flexible plastic tubing, making this fitting a practical choice for coolant, chemical, or general-purpose fluid transfer lines where a compact, inline bulkhead union is needed.
Designed for use with plastic tubing having a 3/8-inch inside diameter. Suitable as a bulkhead union fitting in low-pressure plastic tubing systems.
Installation should be performed by a qualified plumber or fluid systems technician. Ensure the panel or wall is drilled to the correct diameter to seat the bulkhead body before securing the locknut. Depressurize and drain the system fully before installing or servicing this fitting. Do not exceed the 150 psi rated operating pressure or the stated temperature limits.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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