Structure and Filtration Principle:
The original factory air filter usually consists of multiple layers of composite filter paper (some models use non-woven fabric or glass fiber materials), folded together. The outer layer intercepts large particles of dust, while the inner layer captures fine impurities (typically capable of filtering particles ≥ 1μm, with a filtration efficiency of over 99.9%). The filter is installed inside the air filter housing and is secured by a sealing structure to ensure that all incoming air must pass through filtration, preventing unfiltered air from directly entering the compressor.
Core Advantages of the Original Filter:
High Efficiency Filtration: Designed with a gradient density filter paper, the outer layer is loose to intercept large particles, while the inner layer is dense to capture fine dust, with a larger dust capacity (30% higher than ordinary filters) and longer service life;
Low Resistance: Optimized folding structure and air passage design ensure low intake resistance (initial resistance usually ≤ 50mbar), reducing compressor suction energy consumption;
Environmental Resistance: The filter paper is treated with waterproof and oil-resistant processes, adapting to humid or oil-laden environments, avoiding filter blockage due to moisture;
Precise Adaptation: The size matches the filter housing perfectly, and the sealing rubber strip (or sealing ring) material is resistant to aging, ensuring no bypass leakage.
Key Points for Model Matching:
The specifications of the air filter are directly related to the intake volume of the air compressor and the size of the filter housing. Different series (such as GA, G, ZR, etc.) and power models (such as GA7.5 and GA75) have significant differences in filter size and filtration area. When purchasing, please provide:
The specific model of the air compressor (such as GA22VSD, G11) and the factory serial number;
The part number on the old filter (usually marked on the filter end cover or label, such as 1621735200, etc.);
The size of the filter housing (diameter × height) or installation method (such as snap-on type, flange type).
