Liquid-trough high-efficiency supply outlet features:

  1. Box damper (integrated type) made of cold-rolled steel, surface electrostatic powder coated, positioned via plug-in hanging without requiring adjusting rods or turnbuckles.

  2. Diffuser plate is aluminum with full perforation, surface electrostatic powder coated.

  3. Filter is a leak-free bagless high-efficiency filter, H13-H14 (filtration efficiency 0.3 µm 99.995%, H14 DOP tested). Frame is galvanized steel, media is ultra-fine glass fiber paper.

  4. Flexible connection made of single-side coated canvas, length 200.

Liquid-trough high-efficiency supply outlet applications:

  High-efficiency filters generally refer to those with a collection efficiency of 99.99% or above for particles ≥0.3 µm, typically used as terminal filtration devices in pharmaceutical cleanrooms to provide clean air. Whether a cleanroom can achieve and maintain its designed cleanliness level depends partly on the performance and installation of high-efficiency filters. Therefore, leak testing high-efficiency filters in cleanrooms to ensure compliance is a key method for maintaining a clean environment. The guide for sterile drug production also states that high-efficiency filters should undergo leak testing after installation to check seals at gaskets, frames, and filter media. For sterile preparation workshops, periodic leak tests on high-efficiency filters are required.