An equivalent element to replace Bottarini 223070 in its compressed air filter housing. It is a coalescing build, so its work is capturing liquid aerosol rather than dry particulate, and it drains what it collects to the bottom of the bowl. Small housings like this one usually sit at a point of use, feeding a tool, a gauge line or an instrument. That makes them easy to forget and expensive to neglect, because whatever the element stops holding back is going straight into the equipment it was fitted to protect. Order to the code on the cartridge, not by bowl size. The full element range is in coalescing filters and elements, with complete units under air filters. Note: This is an equivalent part and not an original equipment manufacturer (OEM) part number. Some manufacturers require OEM parts to maintain your warranty. | Air Supply Number: KP55-007