air shower pass box
An air shower pass box is a specialized cleanroom equipment designed to maintain environmental cleanliness during material transfer between different cleanliness zones. This sophisticated system combines high-efficiency particulate air (HEPA) filtration with precision-controlled airflow to remove surface contaminants from items passing through. The pass box features a robust stainless steel construction with interlocked doors that prevent simultaneous opening, ensuring contamination control. When activated, high-velocity HEPA-filtered air streams blast particles from items within the chamber, while the contaminated air is extracted and filtered. The system typically operates at speeds between 22-25 m/s, effectively dislodging particles as small as 0.3 microns. Modern air shower pass boxes incorporate advanced features such as digital control panels, customizable cycle times, and real-time monitoring capabilities. These units are essential in industries requiring stringent cleanliness standards, including pharmaceuticals, semiconductors, and medical device manufacturing. The pass box's automated operation ensures consistent cleaning performance while minimizing human error and cross-contamination risks. Additional features often include LED indicators for operational status, emergency stop buttons, and validation ports for performance verification.