1、MULTIPLE PURPOSES: This device has the functions of pressure regulating valve, oil water separator, filter, air source processor, convenient and practical. 2、HIGH EFFICIENCY: Can be adjusted according to your needs, effectively removing moisture from the air, filtering fine particles, and keeping the air clean. 3、EASY OPERATION: Pull up the large knob and rotate it to obtain the specified pressure, rotate clockwise to increase, counterclockwise to decrease pressure. 4、ATOMIZATION EFFECT: The oil cup allows the oil to achieve atomization effect, delivering atomized oil to the pneumatic tool, extending the service life. 5、ALUMINUM ALLOY: The air filter regulator housing is made of aluminum alloy, which is resistant to pressure and corrosion, and has a long service life.