Stage 1: Filter & Regulator? Compressed Air Water Trap Filter Equipped with 5 Micron Element, which has Excellent Filtering Performance, Much Longer Life and Reuse Feasibility, Remove Most of Moisture and Particles in the Air Line; Pressure Regulator Accurately Adjust and Stabilize the Air Pressure. The Coalescing Filter is Equipped with a Micron Element that can Remove of Moisture, Smaller Particles and Oil, which Pass Through Stage 1 Combo. When the Filter Element needs to be Replaced, the Red Indicator will Pop Up.
Stage 3: Desiccant Air Dryer? The Desiccant Air Dryer allows the Air to be Thoroughly Dried and Cleaned before it Enters your Pneumatic Tools.The Desiccant Beads need to be Added to the Metal Bowl. When it needs to be Replaced, the Beads will Change from Blue to Pink. 2 x 5 Micron Element(One of Them is Installed in the Product), 2 x Micron Element (Same as Above), 4x (100g) Desiccant Beads Bag. 2 x 1/2 NPT Fittings, 1 x Thread Seal Tape.