Industrial 157-171-S Air Oil Separator Element

157-171-S Rotair air/oil separator element is a spin-on replacement part for Rotair rotary screw compressors, designed to live in the oil separation stage to remove oil mist from the compressed air stream and protect downstream components. Identified by part number 157-171-S, this oil separator filter is documented by Rotair as the standard oil separator element for the screw group, and compatibility is noted with Rotair RVK20 LP-560 and RVK25 LP-713 models. The 157-171-S designation appears across multiple aftermarket catalogs as the Rotair oil separator filter or separator element, underscoring its role as the dedicated replacement in routine maintenance and service intervals for affected Rotair units. Used in industrial air systems where clean air delivery is critical, the element helps maintain air quality and compressor longevity by capturing oil that would otherwise carry into the compressor output. This part is commonly listed alongside other Rotair service items and is available from multiple authorized and aftermarket suppliers under the Rotair 157-171-S identifier, making it the go-to replacement for sustaining the performance and reliability of compatible Rotair screw compressors.