?What is meant by pneumatic filters

Pneumatic filters keep pneumatic systems working properly by removing contaminants such as water and oil vapor from the compressed air stream. Some filters are designed to trap particles and allow only airflow, while others use a type of membrane that only allows air to pass through. Pneumatic filters are often used alongside pneumatic air lubricators
Pneumatic filter
Among the tools that prevent the failure of pneumatic equipment are pneumatic filters. The amount of maintenance of these filters depends on the amount of waste that passes through the stream. The more the amount of waste, the longer the life of this filter. Sometimes it happens that the device has a pressure drop and at this time the pneumatic filter must be cleaned. There are also parts of the filter that should not be cleaned because they indicate service and automatic or manual draining.
When producing compressed air, contaminants such as moisture and oil enter the system. Without a pneumatic filter, industries that require a high degree of hygiene, such as industrial food manufacturers, are at risk of introducing additional contaminants into their process. This factor is very dangerous for the device, that’s why the filters follow an important and necessary task