Brand new 2" NPT industrial grade compressed air pressure regulator with high quality 200 PSI liquid filled air pressure gauge.This regulator has a max pressure of 300 PSI and will regulate your air pressure anywhere from 10 PSI up to 180 PSI. The adjustable turn knob makes adjusting your pressure very easy. This regulator features a durable zinc body and a balanced valve design. This is a directional flow regulator that has an arrow on the bottom showing what direction the air needs to flow. There are 2" female NPT threads (measure 2-1/4" diameter) on each side for your main compressed air line and 1/4" threads on the outer sides for your gauge to go on either side and there is a plug to fill whichever side you don't use.