Airlock & Anteroom Doors
Explore Zhenghong’s professional line of anteroom and airlock doors engineered to maintain critical pressure cascades and eliminate cross-contamination between varying ISO cleanroom zones. From smart interlocking systems to absolute hermetic seals and heavy-duty self-closing steel doors, we supply global healthcare and pharmaceutical contractors with compliant, flush-fit access solutions built directly from our certified factory.
Interlocking Cleanroom Doors
Why It’s Essential for Airlocks: Designed as the primary operational safeguard for multi-stage cleanroom entry barriers. The integrated intelligent electronic interlocking system ensures that the inner and outer doors can never be opened simultaneously. This creates a secure, pressurized buffer zone that prevents unconditioned or contaminated air from bypassing the airlock during staff or material transfer.
Ideal Locations: Personnel airlocks (PAL), material airlocks (MAL), gowning/degowning rooms, and pharmaceutical changing zones.
Zhenghong Advantages: Features a microcomputer-controlled interlocking logic matrix with emergency override capabilities for absolute fire safety. Built with a completely flush, crevice-free frame profile to ensure zero particulate accumulation and maximum sterilization efficiency.
Medical Hermetic Doors
Why It’s Essential for Airlocks: Critical for specialized airlocks separating ultra-clean environments (such as ISO 5 operating theaters or biosafety labs) from public corridors. When closed, the advanced sliding or swing hermetic mechanism active-compresses the door leaf tightly against the structural perimeter gasket, ensuring a absolute zero-leakage seal under severe positive or negative pressure.
Ideal Locations: Negative-pressure isolation anterooms, sterile supply airlock entries, and hazardous material cross-over locks.
Zhenghong Advantages: Certified with a National Grade 8 airtightness rating. Engineered with specialized abrasion-resistant silicone perimeter tracks and ultra-quiet brushless automation tracks () that withstand continuous, high-frequency B2B commercial operations.
Self-Closing Sealed Doors
Why It’s Useful in Airlock Areas: Specially engineered for high-traffic cleanroom support zones where rapid mechanical resetting of the pressure barrier is required. The high-performance overhead door closer ensures an immediate, automated, and smooth return-to-close action after every passage, preventing prolonged pressure drops and securing the controlled environment effortlessly.
Ideal Locations: Fast-access airlock corridors, laboratory staging areas, cleanroom utility rooms, and ICU buffer zones.
Zhenghong Advantages: Fabricated with a heavy-duty steel core and an integrated structural reinforcement framework to resist pressure-induced warping. Outfitted with heavy-duty stainless steel hinges and an automatic mechanical drop-seal at the bottom that deploys seamlessly upon closing, providing a reliable perimeter barrier.
Categories
Manual Swing Doors
Performance Ratings
| Performance Metric | Rating / Standard |
| Airtightness (Hermetic Performance) | Grade 8 (Highest Level) |
| Thermal Insulation | Grade 10 |
| Fire Resistance (Flammability) | Class B1 |
| Closing Force | > 70N |
| Watertightness & Wind Pressure Resistance | Dual Grade 6 |
Automatic Sliding Doors
Performance Ratings
| Performance Metric | Rating / Standard |
| Airtightness (Hermetic Performance) | Grade 8 (Highest Level) |
| Thermal Insulation | Grade 10 |
| Fire Resistance (Flammability) | Class B1 |
| Closing Force | > 70N |
| Watertightness & Wind Pressure Resistance | Dual Grade 6 |
Product Catalog
Download our cleanroom doors catalog to review the full range (hinged and sliding. single-and double-wing). key technical data (dimensions. door thickness. surfaces). availableoptions (e.g. interlock system solutions. automation and safety components). and coreperformance features.
Share your project requirements and consult with our engineering team.