2.1 The filter is mainly used in chemical, petrochemical, light industry and other production materials, liquids and gases to filter the solids. Usually installed in the pump, the compressor inlet or pipe before the flow meter to protect such equipment or instruments. 
 2.2 Applicable temperature: -20 ℃ ~ +300 ℃ 
 2.3 for ammonia, F22 and other refrigerants as the working fluid cooling system. 
 3. Structure and working principle 
 Filters are usually installed in the pump, the compressor inlet or pipe before the flow meter, filter through the built-in filters to protect such equipment or instruments. 
 4. Technical performance 
 4.1 Maximum working pressure 4.0MPa, the normal working pressure 2.5Mpa. 
 4.2 The product implementation HG/T21637-1991 "Chemical Pipeline Filter" series of technical conditions. 
 5. Custody, maintenance, installation and use 
 5.1 Filters should be stored in dry, ventilated room, should be blocked at both ends of the filter channel. 
 5.2 Long-term storage of filter should be checked regularly to remove dirt.