The inflatable airtight door is mainly used in rooms with airtightness requirements in high-level biosafety laboratories (BSL-3, BSL-4, ABSL-3, ABSL-4), which can solve the problem of door airtightness. 

The inflatable airtight doors are divided into single-airbag and double-airbag inflatable airtight doors, among  which the double-airbag inflatable airtight doors have the on-site airtightness self-test function. The working principle is: when the door is opened, the inflatable seal is deflated and contracted in the groove; and when the door is  closed, the inflatable seal inflates and expands to create a tight seal between the door and the door frame while the  door is locked tightly. The inflatable airtight door adopts all stainless steel seamless welded structure, with excellent  airtight performance, and resistant to formaldehyde, vaporized hydrogen peroxide, gas chlorine dioxide and other  disinfectants. It can be used independently or in combination, enjoying such features as single door control, multiple-door interlocking, safe and reliable operation.

Performance index：

1. Structural pressure resistance: ≥2500Pa; 

2. Inflation and deflation time of the inflatable sealant: ≤ 5s; 

3. Inflation and deflation times of the inflatable sealant: ≥ 10000 times; 

4. Airtightness: Keep an airtight space airtight under the pressure of +500Pa, with the leakage rate <0.25% vol/h; 

5. Safety redundancy: Both sides of the airtight door are equipped with E-stop button and manual air release valve,   which can effectively avoid the airtight door opening failure due to electrical or gas circuit failure; 

6. The thickness of the stainless steel plate of the door body is not less than 2.0 mm, with firm structure and the   structural stress resistance of 22,500Pa; 

7. Corrosion resistance: The product is made of high-quality stainless steel, resistant to disinfectants, cleaning   agents and acids, alkalis and other chemical reagents; 

8. An electromagnetic lock is equipped to realize double door interlocking function; 

9. The access control password device can be set according to the user's requirements.

Performance index：

The electrical interlocking device box is fully sealed and can be repaired  online; 

2. E-stop button and manual air release valve are equipped, enjoying  higher safety; 

3. Double-airbag inflatable airtight door has the on-site airtightness  self-test function; 

4. Non-standard products can be customized.

The biosafety airtight door (hereinafter referred to as “airtight door”) mainly consists of the door frame, door leaf,  inflatable seal, and inflatable/deflatable control system, where the inflatable seal is embedded in the groove of the  door leaf frame. The working principle is: when the door is opened, the inflatable seal is deflated and contracted in  the groove; and when the door is closed, the inflatable seal inflates and expands to create a tight seal between the  door leaf and the door frame while the door is locked tightly.

Self-developed stainless steel seamless internal welding type

The inflatable seal is made of high-density corrosion-resistant material, which is resistant to formaldehyde,  vaporized hydrogen peroxide, gas chlorine dioxide and other disinfectants. It can be used independently or in combination, enjoying such features as single door control, multiple-door interlocking, safe and reliable operation. The  product is widely used in high-level biosafety laboratories, disinfection room, isolation room and other health and  safety fields.

Product advantages

● Inflatable high-density sealing strip, with stronger sealing performance. 

● Stainless steel disc type viewing window. 

● Interlocking to avoid wrong operation. 

● Door frame with matching framework design for easy installation. 

● Round corner design of the door leaf for better airtight effect.

Technical parameters:

Power supply: Single-phase AC power supply 220V/50HZ 

Operating ambient temperature: -30°C to 50°C; relative humidity: less than 90% 

Inflation pressure: 1.5KG/cm2; inflation time: <5s; deflation time: <5s, no blasting and gas leakage phenomenon after 

repeated inflation and deflation for more than 10000 times.