A coalescing filter from Grainger helps keep air compressors and other pneumatic equipment running smoothly. Pneumatic coalescing filters can remove water and oil aerosols by coalescing the aerosols into droplets that are drained from the bottom of the filter. Using the proper compressed air filter helps keep pneumatic valves and cylinders from getting plugged and causing equipment malfunction. Find general-purpose pneumatic and coalescing filter types at Grainger.