Air Compressor Oil Water Separator Filter Regulator Trap For AFR2000 AL2000Feature: 1: Made of high quality material, it is durable. 2: Easy to install and disassemble. 3: Use to control the pressure element and the backlog. 4: It uses the intake throttle pressure, by the force balance and overflow regulator. 5: Clockwise to increase pressure and anticlockwise reduce pressure. 6: To change the gas line pressure, first pull out the hand wheel, and then to get any pressure within the specified range through mediation plastic