Tube Fittings Types And Applications
Tube Fittings are used to connect two or more tubes together. Tube Fittings always have to be used with tube and pipes. Well, tubes and pipes are hollow uniform cylinders and are rigid, but permanence too. Don’t get it confused with the hose. A hose is a flexible tube that can be used for low-temperature applications. For high-pressure and high-temperature applications, metallic tubes are the suitable ones.
Tube Fittings applications: We can categorize its applications into three main categories.
* Fluid transfer: OK, have you ever paid attention to the boiler in your home? Here’s a picture of a domestic boiler (https://www.voltimum.co.uk/sites/www.voltimum.co.uk/files/fields/main_image/horstmann_boilerwiring_domestic_boiler_0_0.jpg.) Brass tubes and Tube Fittings are the most common choice for domestic boilers. Why brass tubes and fittings? Well, we can consider domestic boilers as medium-temperature applications. So, we can’t use PVC pipes and fittings here.
Fluid transfer includes chemicals as well. In fluid transfer applications, Tube Fittings are used with seals to prevent possible leakage.
* Pneumatic applications: In other words, transfer of gases. We can consider it as a high-pressure application. High-pressure gases can leak even through a tiny gap. Which means Tube Fittings that we use for pneumatic applications should have very tight sealing. Also, must be chemical resistant (resistant to chemical corrosion.)
Other than pneumatic and fluid applications, structural designs also incorporate Tube Fittings. Anyway, we don’t require tight sealing here (they do not carry fluids.) But strong physical integrity is a must property.
Tube Fittings materials: As mentioned, the materials used for fittings should be able to handle high-temperature and high-pressure. Which means we can’t use softer materials such as PVC. PVC pipes and fittings will deform and fail at high temperatures. Also, PVC pipes and fittings can’t handle high-pressure. Brass is one of the most popular materials that are widely being used for tubes and fittings. Brass can handle high-temperature and high-pressure, and lighter than most metallic materials. Corrosion-resistive properties also to mention.
For outdoor applications, stainless steel is the most popular material choice for Tube Fittings. Corrosion-resistance is the top property of stainless steel Tube Fittings.
Fitting connection methods: Various types of connection methods are available for every industrial, commercial, and residential applications. Compression fittings, bite-type fittings, mechanical grip fittings, flare fittings, end-fittings, flange fittings, Luer locks, push-to-connect fittings, and threaded fittings are some examples of fitting types.
Common Tube Fittings types: Same as PVS piping and fittings, metallic fittings also come in many types. Adaptor, coupling, union, sleeve, cap, plug, elbow, Tee, Wye, cross, reducer, olet, nipple, and barb are some of the examples of fitting types.
Some final words: Tube Fittings are available in various types and materials such as aluminum, brass, stainless steel, cast iron, copper, steel, PVC, ABS, PE, PP, and nylon. Metallic ones are ideal for high-temperature and high-pressure applications. Take a look at the boiler in your home – you can see a few types of fittings there. It is a good example of metallic fittings for high-temperature applications. For outdoor applications, stainless steel fittings offer greater safety. The prices may vary depending on the type and materials used. Metallic fittings and pipes are more expensive than PVC ones.