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Railway Filters

Melissa Shea-Brooks

Trains travel through every climate condition imaginable. The trains and their conductors are faced with many responsibilities. A train needs to be reliable and punctual, regardless of its content. The train industry relies on safety and excellent performance. The entire safety of rail transport is dependent on a reliable air system.


Since the majority of applications on trains are external, they are exposed to numerous (harsh) conditions. Moisture in the compressed air system has a detrimental effect on its performance. Moisture can also lead to fractured air lines and injure pneumatic cylinders by freezing and blocking pipes.


Lack of awareness towards the reliability of the train air system can result in: system failure, unscheduled and non-budgeted maintenance, and costly repairs. Awareness can be addressed and contained by following a schedule of routine maintenance and inspections.


Due to the risk of combustion smoke buildup, train filters should be between a 17 to a 20 on the MERV rating scale. A filter rated between 17 to 20 catches carbon dust and all combustion smoke that will protect the lifetime of the application. Natural contaminants such as water, oil, and dirt may create a paste that will result in a nasty effect on the system. Due to the disposable nature of the filter media, most filters must be replaced and not cleaned.
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