This 3 stage breathing air compressor that will pump up to 5000 psi. It is air cooled, with coolers after each compression, relief valves on all stages, and ahigh efficiency fan to provide high velocity cooling over the compressor. We include an automatic drain system, an hour meter, a high-pressure shut down as standard equipment with our electric models. This is our most popular SCBA compressor. It is also a great SCUBA compressor for your average dive shop.