Chapter 10 Air Supply Devices and Pneumatic Compon (2)Performance 1)Filter rating (um) 2)Water trap efficiency:capacity to separate water,usually denoted by symbol n,n≥80% 9-P2 (10-1) 0 3)Dust removal efficiency 16 Homepage List Upwards Downwards Retumn ExitChapter 10 Air Supply Devices and Pneumatic Components 16 (2)Performance 1) Filter rating (μm) 1 1 2     − = （10-1） 2) Water trap efficiency: capacity to separate water, usually denoted by symbol η, 3)Dust removal efficiency ≥80%