Since pneumatic systems operationalize compressed air, it’s important that the air in question is free of contaminants. At the same time, it’s also important that the connections between the tubes are secure and that there are no leakages. This connection is secured by tube fittings.
But pneumatic tube fittings serve more purposes than just sealing the ends of tubes. These tubes deliver pressurized air to the point where the main operational activity takes place. You need tube fittings to connect different components of a pneumatic system, such as the tubes, pipes, hoses, and valves.
Your choice of tube fittings depends on a variety of factors. In this post, we will help you choose the right one:
Tube fittings that work well for a hydraulic system may not be right for a pneumatic system. The level of durability you require primarily depends on the working environment and the pressure and temperature levels involved. Since the main fluid in the pneumatic tubes is air, plastic push-in fittings work as a popular choice for low-pressure environments.
Plastic is also more affordable and can be easily replaced. On the downside, it can’t withstand very high pressures. In that case, brass push-in fittings are a better option. These fittings are also tolerant to high temperatures.
If leakages are a concern, compression fittings area viable option. These are made up of brass, with nuts being used to compress the ferrule. Since both the ferrule and tube are compressed, they bow inwards and fit together tightly.
For work environments that use expensive fluids, these are a good fit. They’re priced higher compared to plastic and brass push-in fittings, but make up for this by preventing costly leakages. These fittings also work well if your tubes are made of copper, aluminum, and plastic.
Unfortunately, neither plastic and nor brass will last long if your pneumatic tubing holds highly corrosive fluids. Plastic will melt and brass will corrode. In this case, we suggest stainless steel push-in fittings.
These are highly durable and resistant to corrosion, high pressure, and temperature. Other than that, these fittings work for all major types of fluids including water and oil. They are also used in robotics and conveyor systems.