Air Shower Unit
An Air Shower Unit is a self-contained cleanroom entry chamber that blows high-velocity, HEPA- or ULPA-filtered air over personnel or materials to dislodge surface particles before they enter a controlled environment. It is commonly used in pharmaceutical, laboratory, electronics, medical-device, and surgical-instrument manufacturing facilities.
How it works
The person or trolley enters through one door.
-
Both doors lock through an electromagnetic interlock, preventing cleanroom air from being disturbed.
-
Adjustable nozzles on the walls and ceiling deliver filtered air at high velocity to remove loose dust, lint, and particles.
-
The air recirculates through HEPA filtration; typical HEPA efficiency is 99.97% at 0.3 micron, while ULPA systems can reach higher efficiency.
-
-
After a preset cycle—often adjustable from 0–99 seconds—the exit door unlocks.
Typical specifications:-
Parameter Typical range Capacity Single-person, two-person, cargo/pallet, or tunnel type Filtration HEPA, commonly 99.97% @ 0.3 micron; ULPA options available Nozzle air velocity Around 25 m/s in some standard models; industrial units may reach much higher velocities Cycle time Adjustable, commonly up to 99 seconds Construction Powder-coated GI/MS or stainless steel, often SS 304 for pharma/food-grade use Controls PLC/microprocessor timer, interlocked doors, emergency stop, fluorescent/LED lighting -