The UA3810AB 10 gal ASME certified reserve air tank is the ideal addition to the jobsite to ensure the air pressure being supplied to all nailers is sufficient and that the required PSI remains constant even if the compressor is 200 or more feet away. Simply add this reserve air tank between the compressor and nailers and there will be enough pressure to power five or more nailers operating at the same time. In the event that a nailer requires less PSI than other nailers attached, the UA3810AB has that situation covered with its standard factory installed large knob regulator.