|Tubing & Hose Buying Tips
#20: Don't Forget About Fittings and Clamps
It can be challenging to make sure you’ve covered all the bases during the tubing and hose selection process. Have you considered all the elements involved with the application? Temperatures, chemicals, pressures, flexibility needs? In Tubing & Hose Buying Tips we’ll address common selection factors, one at a time, in each issue of extrusions.
In most cases you'll need to attach your tubing or hose to other equipment. Fittings and clamps come in many different materials – from nylon to PVDF, fluoropolymer to brass – so you can select the best match for your application. You can even build an entire system from one material (polypropylene, nylon, polyethylene, fluoropolymer), which can greatly simplify the upfront work of checking for chemical compatibility.
When using different tubing and fitting materials, remember that the two materials must be suited to each other and must both work well in your application. Pressure and temperature also need to be considered.
In general, softer tubing like PVC, polyurethane, and silicone work best with barb style fittings, such as NewAge Industries' Thermobarbs®. Barbed fittings are inserted into the tubing, which stretches to grip the barbs and form a seal. They are available in plastic or metal in a variety of styles and may be used repeatedly or for single uses.
Clamps are typically needed when barbed fittings are used, and they, too, come in various styles and materials. Some can be applied by hand, while others require the use of screw drivers or hand tools.
Harder tubing materials such as polyethylene, polypropylene, and nylon are better suited to push-to-connect and compression fittings. Unlike barbed fittings, these types grip the exterior of the tubing. O-rings and/or the fitting's surfaces seal the tubing ends for leak-free connections.
In the case of a hose assembly with a permanently-attached, stainless steel barbed fitting, a collar is typically used. The collar acts like a clamp by putting pressure on the hose, sealing it to the fitting on the hose's interior. The attachment is done by trained personnel using special equipment.
Your fitting and clamp choices will be determined mainly by your application, but be sure to do the research needed to determine which material and style will work best.
Click here to view NewAge's offering of fittings and clamps.
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#19: Know Your Packaging Requirements
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