Air Boss Heavy Duty Pressure switch for 5 Hp. Air Compressor and up . Part # TQ-17010. PSI cut in at 120 and out at 150 PSI. Go to our web site to see our other compressor parts. http://airbosscompressors.blogspot.com We have in stock, rebuild kits and parts for Air Boss and Techquip air compressors. Air line filters, regulators , in-tank check valves, safety valves , auto moisture drains , electronic time auto drains