Midland Industries 18064 1/4 Compression Union Brass

Product Description

The MIDLAND INDUSTRIES 18064 is a brass compression union designed to join two runs of tubing with a secure, leak-resistant connection. Rated to 300 psi and suitable for temperatures from -65 degrees F to 250 degrees F, this fitting handles demanding service conditions in both refrigeration and fluid-handling applications. Both ends accept 1/4-inch compression connections, and the 7/16-24 thread and 0.43-inch hex flat make installation straightforward with standard hand tools. At 0.81 inches center to center, the compact body fits in tight spaces without sacrificing joint integrity. Plumbers, HVAC technicians, and refrigeration service pros reach for this fitting when a reliable mid-line union is needed on small-diameter tubing runs.

This compression union is suited for residential and light commercial plumbing, HVAC refrigerant line accessories, pneumatic controls, and instrumentation tubing. It is compatible with copper, aluminum, and thermoplastic tubing, making it a versatile choice across multiple trade disciplines. The all-brass construction resists corrosion in typical service environments, and the compression design eliminates the need for soldering or special pipe-joining equipment on the job.

Key Features

• 1/4-inch compression on both ends for a tool-free, solder-free connection
• Rated to 300 psi for use in pressurized fluid and gas lines
• Temperature range of -65 degrees F to 250 degrees F covers most HVAC and plumbing applications
• Brass construction provides corrosion resistance and long service life
• 0.43-inch hex allows installation and removal with standard open-end or adjustable wrenches
• Works with copper, aluminum, and thermoplastic tubing

Compatibility

Compatible with copper, aluminum, and thermoplastic tubing at 1/4-inch outside diameter. Designed as an OEM-style compression union for use in plumbing, HVAC, refrigeration, and pneumatic tubing systems requiring a straight union connection.

Installation Notes

Installation is performed by licensed plumbers or HVAC technicians following applicable IPC or IFGC guidelines. Before servicing, shut off the fluid or gas supply and relieve system pressure completely. Hand-tighten the compression nut onto the fitting body, then advance with a wrench; avoid over-tightening, which can crack the ferrule or distort the tubing end. Verify that the tubing is cut square, deburred, and fully seated before torquing the nut.