Overview Reviews Product Description Devilbiss HAF505 Coalescing Filter, 55CFM The HAF-505 Coalescing filter is designed to remove dirt, pipe scale, and liquid aerosol. It includes a 0.01 micron filter element and automatic mechanical drain. Product Videos Custom Field Product Reviews Write a Review Write a Review × Devilbiss HAF505 Coalescing Filter, 55CFM Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *