This pump is most commonly used on compressor tanks of 80 gallons or larger in size unless being used with a gas engine, where in most cases, the tank will be much smaller. It can be used with a 12 HP or larger gas engine or a 220-volt 5 horsepower electric motor or larger. If this is not needed, just leave the head unloader line unhooked and it will function as a normal compressor. This pump features head unloaders to be used with dual control or gas powered engines, this gives you the ability to freewheel the pump while running to lengthen life span of the pump in high-use applications. This is a 5-horsepower pump that will deliver 17.2 CFM at 730 RPM and 18.71 CFM at 760 RPM with a max RPM of 900. Aircom Quick Line 1" System & Accessoriesĥ HP Replacement Two Stage Air Compressor Pump with Head Unloadersīrand new two cylinder cast iron two stage air compressor pump.Aircom Quick Line 3/4" System & Accessories.Rapidair Fastpipe 3/4" Air Piping System.Rapidair Maxline 1" Compressed Air Piping System & Accessories.Rapidair Maxline 3/4" Compressed Air Piping System & Accessories.Rapidair Maxline 1/2" Compressed Air Piping System & Accessories.Rapidair 3/8" Air Piping System & Accessories.Gas Air Compressor Throttle Control Cables & Valves.Air Compressor Unloader Control & Pilot Valves.Compression Thread In-Tank Check Valves.Magnetic Starters Pressure Relief Safety Valves.Import Style Replacement Pressure Switches.