Choosing a BendPak TRI-MAX air compressor for your air system needs means you'll get leading-edge technology from a world leader in automotive service equipment. BendPak TRI-MAX Series compressors have earned their reputation as an industry leader by meeting rigorous demands placed on them every day in businesses like automotive and body repair to manufacturing and industrial service. This ASME certified power-house air compressors feature the renowned TRI-MAX extreme-duty three-cylinder pump that has been designed and manufactured to operate with maximum efficiency under all load conditions. The 100% cast-iron TRI-MAX Series pump features a "W-3" configuration that provides 360° cooling efficiency and simple splash lubrication for total reliability. A large pump that puts out little noise but a lot of power is due to the slower RPM speed and efficient two-stage design, a special feature of every TRI-MAX Series pump. Because they operate at slower speeds than other compressors and feature large-diameter finned copper tubing between stages, they have a lower operating temperature, which ultimately achieves maximum compressor efficiency. An integrated pressure unloader valve exhausts the air between the compressor and check valve allowing the compressor to begin its next cycle without any head pressure. The TRI-MAX Series features durable cast iron construction for longer life and less downtime, and heavy-duty reed-type valves for simple yet efficient airflow. The result is more air per horsepower.