Keep in mind tighter does not mean better. Follow the number of wrench turns as indicated in the table below. Step 4: Use a wrench to finish tightening. Step 3: Assemble the nut to the fitting body and tighten it to hand tight. Be sure the tube is bottomed on the fitting shoulder. Step 2: Insert the tube into the compression fitting. The thread of the end of the nut must face outward. Step 1: Slide the nut, then sleeve, onto the tubing. Watch this video for a quick tutorial on how to install compression fittings on nylon and copper tubing. The procedure is specified using nut rotation rather than torque. The installation process varies depending on the manufacturer and the specific fitting. One benefit of compression fittings is the ease of assembly and disassembly. They are also commonly used in plumbing applications. Brass is the most common material for compression fittings because it provides strength and corrosion resistance without increasing costs.Ĭompression fittings are made up of three basic elements: a compression nut or screw, the sleeve/ferrule, and the compression fitting body.Ĭommon uses for compression fittings include connecting a waterline or pneumatic lines. The fittings are made from a variety of materials including plastic, stainless steel, and brass. Compression fittings are wrench tightened and do not require any flaring, soldering, or other preparation of tubing to assemble. They are a strong and reliable connection that tightens down a sleeve over a joint to prevent a leak. Now it is time to look at a different type of connection: compression fittings.Ĭompression fittings are a type of coupling used to connect two pipes or a pipe to a fixture or valve. In previous Dixon® blog posts, we have discussed pipe flanges, swivel joints, dry disconnects, cam & groove couplings, and more.
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