Air Shower Passbox
Air shower Pass Box from NGT use for Controlling the ingress of particulate contamination into cleanrooms and other controlled environments is paramount in order to maintain the integrity of products and processes. Personnel traffic is the most important factor which must be controlled.
NGT Pass Boxes and Transfer Hatches are an effective solution as they allow materials to be transferred into the controlled environment without actual personnel movement. They may also be used to protect the external environment from egress of contamination, for example, in biological safety laboratory applications.
COMPATIBLE STANDARDS
Main Features
- Built-in air shower significantly reduces surface contamination on materials entering or exiting the controlled environment. Materials entering or exiting the controlled environment are “scrubbed” by high velocity ULPA filtered air jets with velocities of 25 m/s (4921 fpm). Contaminated air is then drawn through the base within the unit, filtered and recirculated.
- An array of stainless-steel nozzles direct high-velocity jets within the chamber.
- Air shower duration is adjustable. Standard factory pre-set is 12 seconds in both directions.
- Contaminated air is then drawn through the base within the unit, filtered and recirculated.
- Air shower duration is adjustable up to 2 mins. Standard factory pre-set is 12 seconds.
- Electrical interlocking door mechanism.
- The pass box base surface is constructed of perforated stainless steel 304, making it easy to clean.
- Polycarbonate viewing windows provide a clear view of the internal chamber.
- NGT Air Shower Pass Boxes use German made ebm-papst® permanently lubricated, centrifugal motor/blowers with external rotor designs.
- Selected for energy efficiency, compact design, and flat profile, the completely integrated blower assembly optimizes motor cooling, with unified rotating parts and overall component balance for smooth, quiet, vibration-free operation.
Special Features
- High velocity shower jets in excess of 20 m/s ensure efficient scrubbing action to remove particulate matter
- Fully washable pre-filters remove around 85% of particulate matters, therefore reducing the load on HEPA filters and increasing their efficiency and life span.
- Highly efficient HEPA filters with around 99.99% filtration efficiency for removing particles as small as 0.3 microns and larger.
- Floor matting operated switch for sequential operation of the air shower.
- Multidirectional air flow.
- Adjustable air nozzles.
- Indicator lights on both sides of the air shower for regulation of traffic within the cubicle.
- Emergency buttons on both sides of the air shower to prevent accidental lock-outs.
- Interlocked doors minimize any chances of contamination.
- Door interlocks operate on the magnetic system.
- Hinged motor/blower compartment access panels made of coated aluminium.
- Tamper proof junction box, placed on top.
- Emergency switch off button with audible alarm located within the shower cubicle.
Optional Accessories
- Audio visual alarm indicating condition of HEPA filters
- Clean down timer with operation hold indicator
- VFD based control systems
- Photohelicguage / Digital pressure gauge to monitor of pressure drop across filter.
- Sodium vaporlamps
- Flame proof fitting
Applications
- Microelectronics and semiconductor industries
- Biomedical research
- Life Sciences
- Aerospace industries
- Spray painting
Key Benefits
- Energy Efficient
- SS 304 nozzles
- SS 304 base surface
- Washable prefilter
Contact us now to know more about Air Shower Passbox or discuss your specific requirements.
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