PneumaticPlus PPC3B Series Modular Air Filter Regulator units offer a complete airline solution for the most effective air filtration and pressure control to keep your air tools working properly. The PPF Filter comes standard with a 5 Micron Particulate element that removes harmful debris and moisture. The PPR Regulator provides precision pressure control that can be adjusted and set using the locking knob. PPC Series Modular Air Filter Regulator units are offered with Drain (Manual or Auto) options to better suit your needs. Search for different drain options by typing PPC PneumaticPlus in Amazon's search box. PneumaticPlus PPC Series Units provide quality air filtration for compressed air applications with the flexibility to adapt to the changing needs of your system. Its modular design allows for quick, simple connect or disconnect of units to customize your unit to your specific needs, requiring only a screwdriver or hex key. Units can be installed in any location on a single plane without requiring changes to existing piping. PPR Regulators can be mounted either up or down, and the pressure is controlled using the adjustable locking knob. PPF Air Filters remove harmful debris and moisture from your air supply. PPL Lubricators can be adjusted easily to specifications of your tools and applications for proper protection. Diverter blocks may be used to supply air to secondary locations. Units are designed to fit National Pipe Thread (NPT) sizing. Please visit our Amazon Store for our complete line of air products.