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Air Showers and Pass-Thrus

Air showers play a critical role in maintaining cleanroom integrity by removing loose contaminating particles from people and products before they enter the room. Pass-thru cabinets, also known as pass-thru chambers or pass-thru windows, allow for the transfer of parts and equipment into and out of cleanrooms and critical areas.

air shower inside viewAir Shower Uses and Features

Uses

Air showers help reduce the risk of defects to products and can also increase cleanroom production yields. Air showers improve cleanroom performance and reduce the maintenance needed to maintain a clean environment by minimizing the overall contamination load in the area.

If a cleanroom doesn’t use an air shower’s “pre-cleaning” process, its air filtration system would have to absorb all of the contaminants in the environment. That would increase energy consumption and maintenance costs for the cleanroom.

Features

Some of the most important features of air showers include:

  • High-velocity, high-volume air flow, which allows for fast and efficient decontamination of the atmosphere
  • Adjustable microprocessor-controlled cycle times
  • Option to have Easy-to-use LCD touchscreen interfaces
  • Magnetic interlocks
  • LED interior lighting
  • Inspection panels for air supply ducts
  • Silicone-free urethane sealant
  • Stainless steel door frames are available
  • Standard-sized HEPA filters and prefilters that have no-leak, negative pressure–reliability seals
  • Heavy duty aluminum doors
  • Automatic push button doors are available
  • High speed roll up doors are available
  • Easy access for service and maintenance needs

Pass-Thru Uses and Featurespass thru for cleanroom

Uses

Pass-thrus allow for the contamination-free transfer of materials into and out of cleanrooms. They eliminate unnecessary personnel garbing and entry, and they also prevent contamination while enabling manufacturers to comply with industrial quality standards.

Features

Some of the key features of pass-thrus include:

  • Solid stainless steel construction, 16 ga. 304 #4 Finish
  • Stainless steel door frames are available
  • Stainless steel continuous hinges
  • Tempered safety glass viewing windows
  • Compression latches are available
  • Mechanical door interlocks
  • Option to have Electro Magnetic interlocks
  • UL Fire Rated doors are available
  • Automatic push button doors are available
  • High Speed roll up doors are available
  • Motorized and HEPA Filtration is available

Liberty Industries’ Air Showers and Pass-Thruscleanroom air shower with double door

Air Showers

Liberty ships our air showers in sections, which include:

  • Head section
  • Walls
  • Doors
  • Base (if the unit requires a base)

The head section is approximately 500 lbs. and will require a forklift or material mover that is rated at a minimum of 1,000 lbs. The head section must be raised above and placed onto the wall sections, and the doors are then installed. These systems require an electrical connection, and Liberty supplies power to a junction box. The installation must have an electrician hardwire on-site.

Pass-Thrus

For installation, the wall opening must be a ¼” larger than the OD of the pass-thru. Insert the pass thru into the wall, attach the supplied angle to the wall, and picture frame the unit in the wall.

Value-Added Services

Liberty offers standard sizes from 4 x 4 x 10, 4 x 5 x 10, 4 x 6 x 10, air shower tunnels from 8 to 30 feet or longer, as well as custom design capabilities such as high speed roll up doors and automatic push bottom door operation.

Liberty has two styles of air showers:

  • AS200E
    • Plastic nozzles typically 30 per unit (4 × 5)
    • Top mounted 3-HP blower at ~7,000 cfm
    • Available in either straight thru or 90° angle
  • HVAS-2
    • Side Mounted blower – This designed for areas with height restrictions
    • Nominally 77” W x 48”L x 92”H,  can custom manufacture to fit within your    height   constraints.
    • 3-HP Blower at ~7,000 cfm

Applications

Our air showers and pass-thrus have applications in a number of industries. Some of their most common uses include in the following industries:

  • Pharmaceutical
  • Medical Devices
  • Aerospace
  • Automotive
  • Government
  • Healthcare
  • Research Labs
  • Precision Manufacturing
  • Metal Manufacturing/Lead
  • Electronics
  • Semiconductors
  • Optical
  • Universities
  • Injection Molding
  • Hospital Pharmacies
  • Cannabis growing and final processing.

Quality Cleanroom Accessories from Liberty Industries

Liberty Industries builds air showers and pass-thrus that are essential to helping cleanrooms maintain high sanitation standards. We offer a wide range of standard designs as well as a plethora of customization options.

Liberty has supplied products worldwide since 1953 and  has an extensive track record of manufacturing quality products backed up with top-of-the-line customer service.

If you would like to learn more about our products and services, view our catalog of air showers and pass-thrus. If you have further questions or would like to request a quote, feel free to contact us today.