Oil Lubricated single stage rotary screw technology 11-22kW (15-30HP) Peak Performance The Apex Series keeps it simple to deliver the best performance without distractions. A simple construction gives you reliable, long-lasting performance in a system that's easy to operate Fewer components than the industry standard to give you the power you need in a simple, efficient package Maintenance is easy and can be performed in minutes; minimizing downtime and saving money along the way