Cleanroom & FFU

Fan filter units and cleanroom air systems must hold face-velocity uniformity and pressure cascades around the clock. This tag covers FFU fan selection, filter pressure matching, ISO 14644 and GMP airflow requirements, and semiconductor and pharmaceutical project cases.

Manometer showing negative pressure difference across a doorway
By longwell / August 21, 2026 / Fan Engineering Guides

Positive vs Negative Pressure Ventilation

Room pressure decides which way air leaks through every gap in the bui...

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-strong-EC-centrifugal-fan-benefits-for
By longwell / December 9, 2025 / Technical Articles

EC centrifugal fan benefits for FFUs explained simply

EC centrifugal fan benefits for FFUs explained simply You get many goo...

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Centrifugal Fan Technology and Its Impact on Cleanroom Air Standards
By longwell / October 28, 2025 / Technical Articles

Centrifugal Fan Technology and Its Impact on Cleanroom Air Standards

Centrifugal fan technology helps keep cleanroom air clean and safe. Ad...

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longwell axial fans
By longwell / March 25, 2025 / Technical Articles

[Air Exchanger Ventilation Knowledge Series] Industrial Ventilation and Cleanroom Air-Exchange Requirements

The air quality in industrial production workshops and cleanrooms is c...

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