This professional-grade 1/4-inch filter drier with charging valve is an essential component for AC and refrigeration system maintenance. The 25g capacity unit effectively removes moisture and contaminants from refrigerant lines, helping prevent system damage and maintain optimal performance. Featuring copper connections and a brass charging valve, this filter drier is designed for durability and reliable operation. Its compact size makes it suitable for various residential and light commercial applications. The integrated charging valve provides convenient access for system charging and testing. Perfect for HVAC technicians and professionals performing system repairs or installations. This filter drier helps protect critical system components like compressors and expansion devices by trapping harmful particles and moisture.