The combination filter/regulator/lubricator is an all-in-one accessory that solves all the issues associated with setting up a garage or workspace for air tool use. The filter is a 5 micron filter element that removes moisture and contaminents. This improves tool life. The regulator provides reliable pressure control up to 150PSI. it also is an easy to read gauge. The lubricator has a flow sensor design that provides nearly constant oil/air ratio over a wide range of air flows. The lubricator can be filled under pressure no need to empty the compressor. A sight dome provides fully visible oil flow rate. On the manifold we have incuded a quick coupler which by passes the lubricator for paint spray projects. it also has highly visible prismatic liquid level indicators. This also has quick release bayonet bowls with threaded outlet easy drain line connection. It has a corrosion resistant body and metal bowl. This unit has it all complete assmebly has: filter regulator lubricator pressure gauge brass quick coupler and mounting brackets. The F/R/L can be used with a 2 stage air compressor.Regulator maximum inlet pressure 250PSI.Lubricator has a flow sensor design provides nearly constant oil/air ratio over a wide range of air flows.Manifold block with quick coupler bypasses lubricator for paint spray applications.Highly visible prismatic liquid level indicators.Quick release bayonet bowls with threaded outlet for easy drain line connection.Corrosion-resistant body and metal bowl.Complete assembly includes filter regulator lubricator pressure gauge brass quick coupler and mounting brackets