The self‑clean pass‑through box allows transfer of materials and utensils under Class A protection. Items are decontaminated inside the unit before entering the sterile area. It is mainly used for transfer from general areas to Class D/C zones. The unit is equipped with UV germicidal lamps, and an ozone generator sterilization system can be added according to user requirements.
Schematic Diagram & Components
🔧 Pass‑Through Box – Functional Layout (Based on Original Drawing)
PMO dust injection port 🔵
Differential pressure gauge 📊
Fan 🌀
PMO detection port 🔍
Control panel 🎛️
Liquid tank HEPA filter 🔰
Stainless steel door handle 🚪
Power socket ⚡
Return air (both sides) 🔄
Material flow direction ➡️⬅️
Interlocked doors 🔒
UV lamp (optional) 💡
Ozone generator (optional) ⚡
PMO dust injection
Pressure gauge
Fan
HEPA filter (liquid tank)
Control panel
Door handle (SS)
Power socket
Return air
⬆️ Based on original diagram: PMO port, differential pressure, fan, detection port, control panel, liquid tank HEPA, door handle, return air (both sides), power socket.
Technical Specifications
| Overall Dim. L×W×D (mm) |
Work Zone L×W×D (mm) |
Rated Air Velocity (m/s) |
Work Zone Cleanliness |
Noise (dB) |
Power (kW) |
| 700 × 560 × 1050 |
500 × 500 × 500 |
0.15 |
Class A |
65 |
0.15 |
| 800 × 660 × 1150 |
600 × 600 × 600 |
0.45 ±20% |
Class A |
65 |
0.15 |
| 1000 × 860 × 1350 |
800 × 800 × 800 |
0.25 |
Class A |
65 |
0.25 |
* Custom designs available according to User Requirement Specification (URS).
Key Features
- Flat electronic interlock, reliable, emergency door opening capability; embedded interlock design, smooth operation.
- Integrated rounded corners in work zone – no dead corners, easy to clean.
- Double‑layer negative pressure design, no leakage risk; positive pressure in work zone, unaffected by background.
- Excellent sealing, simple operation, easy maintenance.
- High air velocity, good airflow pattern, high cleanliness.
- UV lamp cumulative timer – timely replacement based on usage hours.