Features: 1) Air source treatment unit includes filter, regulator, filter regulator, and lubricator, or their combined dyad or triplet 2) It is in standard modular design, and can freely separate and combine 3) The product is in reasonable design and easy to adjust 4) Can meet all requirements of pneumatic system 5) Filter adopts novel vane design with high division efficiency and differential pressure discharge device 6) Can discharge water automatically 7) Regulator valve adopts balanced inlet structure with the advantages of stable pressure, high precision, and quick reaction 8) Lubricator is an element that can provide good lubrication for pneumatic system, with novel structure and easy adjustment of oil drip