This industrial style Regulator/Filter has a larger filter than our #2215-A and includes a metal shield to protect the polycarbonate cup. A thumb screw at the bottom allows for easy draining of any liquids that accumulate in the cup. . Install this Regulator/Filter in your line close to your air source to filter out any moisture or debris as well as to dial in and maintain your air pressure. This unit can be used on our #2229-A or #1148-A Vacuum Generators, any of our Gel Coat Spray Guns and our #171-A Chopper Gun. Max PSI 150. Connection to our #171 Chopper Gun, #120 or #836 Gel Coat Spray Guns require a #2222 Male Nipple. Connection to our #123 or #126 Gel Coat Touch Up Guns require a #2223-A Female Nipple.