Stainless Steel Air Shower
A stainless steel air shower is a self-contained cleanroom entry chamber that uses high-velocity, HEPA-filtered air jets to remove loose particles from personnel or materials before they enter a controlled environment. It is commonly installed between a changing room and an ISO/GMP cleanroom in pharmaceutical, biotech, electronics, laboratory, hospital, and precision-manufacturing facilities.
How it works
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The person or trolley enters through one interlocked door.
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HEPA-filtered air is blown from rotating stainless-steel nozzles at roughly 20–25 m/s, dislodging surface dust and particles.
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The contaminated air passes through pre-filters and HEPA filtration, then recirculates.
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After a preset cycle—often adjustable—the exit door unlocks and the user enters the cleanroom.
Typical construction
| Component | Common specification |
|---|---|
| Body material | SS304 stainless steel; SS316 may be specified for corrosive or high-hygiene environments. |
| Filtration | Pre-filter plus HEPA filter; some models specify 99.999% efficiency at 0.3 micron. |
| Nozzles | 12–18 rotatable SS nozzles, depending on unit size. |
| Air velocity | About 20–25 m/s at the nozzle. |
| Doors | Manual or automatic swing/sliding doors, usually interlocked to prevent both doors opening together. |
| Controls | PLC/microprocessor timer, emergency stop, lighting, and adjustable shower duration. |
| Configurations | Single-person, double-person, tunnel, L-type, and cargo/material air showers. |
Where it is used
- Pharmaceutical and API manufacturing cleanrooms.
- Biotechnology, microbiology, and research laboratories.
- Medical device and surgical instrument production areas.
- Electronics, semiconductor, and precision-instrument facilities.
- Food processing and hospital sterile areas.