It is a genuine manufacturer-sourced component that is specially designed for use with Campbell Hausfeld portable air compressors. This part adjusts the pressure of the air coming from the tank to the desired level, unfortunately, over time it may wear out or get damaged eventually requiring a replacement. Keep in mind it is a high-qualit...Read morey part which is made of durable materials and is sold individually. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this regulator.