The SEK filter driers adopt a composition design of drying and filtration and take gas as medium, effectively preventing filtration and soluble substances from entering the key positions of the refrigeration system, in order to secure an operation under the best condition. Features: 1. The automatic compressed device makes it possible to automatically fill in the worn molecules 2.Capable of dissolving pollutants such as moisture and acid 3. Motion of pads will not cause vibration 4. Filtration before drying 5. Corrosion resistant painting 6. Two kinds of connection methods: ODF and SAE 7. Maximum working pressure: 4.140Mpa.