The air compressor filtration system is the key part of the compressor system. There are two categories of filtration. One is the Compressor house filtration, normally the air oil separator, the air filter, and the oil filter for the screw compressor. The oil-free compressor and centrifugal compressor have the panel air filters. The other one is after the compressor line filters to take down more small particles and oil after the dryer. Focusfiltration is making a range of filters, especially the air oil separators. Similar to a screw compressor, a screw vacuum pump also needs an air oil separator,air filter, and oil filter. Focusfiltration makes high-performance filters and separators for screw vacuum pumps. We OEM for many big brand vacuum pumps. We are able to control the oil carrier under 3 PPM.