Put simply, a compression fitting compresses a component of one fitting into another to create an airtight seal between two different lines. In this article, we’ll address the question of which is best: brass vs stainless steel compression fittings? What are compression fittings? We can also supply push-in fittings from Legris and Norgren. To learn more about Dixon's compression fittings, visit Fluid Controls, we supply many types of compression fittings, from A-Lok and buttweld pipe fittings from Parker, to sanitary pipe fittings from Bürkert, and high-purity fittings from Parker’s Vacuseal range. For more information, email or call 800.323.4440.įrom their ease of assembly, even in tight spaces, to their ability to resist corrosion, compression fittings are used widely across a range of industries. manufacturer and supplier of a variety of products such as brass ferrules, compression fittings, welding connectors, pipe, push-on, and DOT air brake fittings. Located in Westmont, Illinois, Dixon Brass is a proud U.S. * Acetal Sleeve 60PT-series and Inserts 63PT-series allow for standard compression fittings to be used with industrial grades of thermoplastic tubing. Working pressure at 73☏ (23☌), refer to the following table:.Temperature: from -65☏ (-54☌) to 250☏ (121☌) with soft metal tubing and manufacturer’s recommendations for thermoplastic tubing.302 stainless steel or 304 stainless steel: for 63PT series (3 sizes). Brass: Alloy 360 and 230 for straight fittingsBrass: Alloy 377 for forged shapes.Compression fittings meet the function requirements of SAE J-512 and ASA.Manufactured for connection to low and medium-pressure tubing connection work where excessive vibration or tube movement is not involved.No flaring, soldering, or other preparation of tubing is necessary to assemble.Designed for use with annealed copper, aluminum, or thermoplastic tubing.Compression fittings can only be disassembled and reassembled a few times before the sleeve and/or fitting body should be replaced to ensure a leak-proof seal.ĭixon offers a variety of compression fittings to ensure you always have The Right Connection®. Reassemble in the same manner as the original assembly. To disassemble compression fittings, loosen the compression nut or screw. Overtightening will deform the sleeve, which weakens the seal. 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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