E1-20, E3-20, E5-20, E7-20, and E9-20 are compressed air precision filter cartridge models manufactured by Hankison and its compatible brands. "-20" indicates the applicable pipe diameter or flow rate specification, while the letter followed by numbers (E1~E9) represents different filtration precision levels and application scenarios.
The specific classification of these filter cartridges based on their functions and filtration levels is as follows:
Filtration Level and Function Description
E9-20 (Main Line Main Line Filter) Function: Primarily used after the aftercooler or before the dryer and other filters. Capacity: Filters out large amounts of liquid and solid particles larger than 3 μm, achieving a minimum residual oil content of only 5 ppm.
E7-20 (Air Line Filter) Function: Typically installed upstream of tools, machinery, valves, cylinders, and other equipment. Capabilities: Filters out liquids and solid particles larger than 1 μm, achieving a minimum residual oil content of only 1 ppm.
E5-20 (High-efficiency oil filter) Application: Used in industries with high air quality requirements, such as precision instruments, control systems, and painting. Capabilities: Filters out liquids and solid particles larger than 0.01 μm, achieving a minimum residual oil content of only 0.01 ppm.
E3-20 (Ultra-high-efficiency oil filter) Application: Used in environments such as adsorption dryers, high-sensitivity measuring equipment, and pharmaceutical and food packaging. Capabilities: Filters out liquids and solid particles larger than 0.01 μm, achieving a minimum residual oil content of only 0.001 ppm.
E1-20 (Activated carbon micro-oil adsorption filter) Application: Specifically designed to thoroughly remove oil vapor and hydrocarbon odors that would normally pass through an oil filter. Capabilities: It can filter out solid particles larger than 0.01 μm, achieving a minimum residual oil content of only 0.003 ppm (commonly used in food and pharmaceutical manufacturing and respiratory air protection).