Choosing the Right Pneumatic Fitting

Pneumatics is a branch of engineering that makes use of gas or compressed air, unlike hydraulics, which uses liquid. Pneumatic systems are extensively used in various industries and comprises of a centrally located and electrically powered compressor cylinders, air motors, and other pneumatic devices. A pneumatic system controlled through manual or automatic valves provide a lower cost, more flexible, or safer alternative to hydraulics motors.

Benefits of Pneumatic Systems

These are some benefits that a pneumatic system offer:-

  • The simplicity of design and control- Pneumatic systems can be easily designed using standard cylinders and other components, and operate via a simple on-off control.
  • Reliability- Pneumatic systems usually have a long operating life and require very little maintenance. Since gas is compressible, equipment is less subject to shock damage. Gas absorbs excessive force, whereas fluid in hydraulics directly transfers force. Compressed gas can be stored, so the machine running on a pneumatic system can still run for a while if electrical power is lost.
  • Safety- Pneumatic systems have a low chance of a fire accident compared to hydraulic systems that contain inflammable liquids. Newer systems are usually safe from being overloaded as well.

Choosing the Right Pneumatic Fittings

There are several kinds of pneumatic fittings available in the market, but choosing the right one isn’t always easy. You need to know the type of tubing being used, the operational air pressure, the amount of vibration the fitting is expected to endure, the thread type on the receiving fitting (if any) and more.

So, whether you are looking to have a pneumatic system in dentistry, garage, construction, mining or any other industry, it is important to choose the right pneumatic fitting to suit your requirements.

Here are some of the common kinds of pneumatic fittings to help you choose the right one:

Quick Connect Couplings

Quick Connect Couplings are crucial when it comes to connections that direct the flow of gas, air or water. Also known as a quick disconnect or quick release couplings, they provide a swift connection for transferring fluids. Generally operated manually, they serve as a great alternative to threaded and flanged connections.

Check Valves

In simple words, check valves allow the flow in a single direction; hence, preventing chances of a reverse flow. Being a self-automated valve, they consistently work even if the manufacturing facility falls short of electricity, air or manual assistance. Not just manufacturing plants, check valves can be found everywhere including homes. In case you have a “sump pump”, it must have a check valve fitted over the discharge line. Check valves are utilised in almost every industry that makes use of pumps.

Hi-Duty Flare-less Fittings

These type of fittings fall into the sub-category of compression fittings. However, they are particularly made applications that involve high pressure; usually more than 1000 PSI. So, if you are in the niche industry that has special requirements in terms of High PSI, you should opt for it.

Push-Connect Fittings

Push-Connect Fittings use a similar mechanism as compression fittings. However, instead of using a metal ferrule, these fittings utilise an O-ring (formed using vulcanised rubber) that possesses the ability to get its actual shape let loose.

As a result, this feature permits the fitting to get easily undone, just the way it was manufactured and assembled. Push-connect fittings have applications that involve lesser air pressure. These fittings are extremely simple to connect, disconnect and then reconnect, perfect for applications that involve frequent alterations. Moreover, they can be utilised with brass, copper, steel, nylon, etc.

Barbed Fittings

These types of pneumatic fittings simply rely on friction to keep the tube attached. Therefore, they tend to be used for very low-pressure works, as anything higher would crack the tube off of the fitting. Barbed fittings are generally made of either thermoplastic or brass, and are only used with polyethylene or rubber tube.

In addition to these stated pneumatic fittings, there is also a range of varying options, depending on the application. The more different the job requirements are, the more atypical the fittings will be.

Generally, compression fittings, push-connect fittings, and speciality compression fittings can be easily bought and utilised for a number of applications and you should consider your project requirements before choosing the correct pneumatic fitting.

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