Biological safety sealing valve

The biological safety sealing valve is an auxiliary device that can divide the ventilation duct into several zones. It has high air tightness and can meet the safety requirements of zero leakage in special occasions. It is also called a zero leakage valve.

Application fields:

Air flow control in air supply and exhaust ducts; a typical application is to be installed on a bag-in-bag-out filter box (BIBO) or a high-efficiency exhaust port to block the air flow when replacing filters and protect accessories and personnel from contamination.

It is widely used in ventilation systems with extremely high air tightness requirements such as BSL-3 and BSL-4 laboratories, Centers for Disease Control and Prevention, biopharmaceuticals, animal laboratories, negative pressure isolation wards and nuclear industries. It can be used in conjunction with HVAC systems, exhaust systems and air purification systems.



Structural design

The valve body of the biological safety sealing valve is made of SUS 304, the plate thickness is 3mm, the valve plate is made of stainless steel, and the blades are sealed with high-quality silicone rubber. Flange thickness 5mm, can be customized. The connection adopts arc design to reduce the accumulation of dust particles and achieve lower maintenance frequency.



Air tightness

The biological safety sealing valve is tested under the condition that the initial pressure is at least 2.5kPa lower than the external atmospheric pressure. The hourly leakage rate does not exceed 0.25% of the test volume. It still maintains good air tightness after the valve is opened and closed 5000 times, and the above leakage data remains unchanged. It complies with the requirements of GB50346-2011 and has obtained third-party inspection reports certified by CNAS and CMA.



Why choose us

As a professional clean air system manufacturer, we focus on the R&D and manufacturing of biosafety and HVAC air control equipment. All products adopt strict quality control processes to ensure stable sealing performance and long-term reliable operation.

We can provide product selection, technical support and customized solutions according to customer projects, providing high-quality products and professional services to customers around the world.



Frequently Asked Questions (FAQ)

1. Where are biosafety sealing valves mainly used?

The products are mainly used in biosafety laboratories, hospitals, pharmaceuticals, biomedicines, nuclear industries and other places with high requirements for air sealing and pollution control.

2. What driving methods are available?

Manual, electric and pneumatic drive modes are available, and can be configured according to the requirements of the automated control system.

3. Does it support non-standard customization?

Supported. We can provide customized services based on duct size, installation method, control method, material and project needs.



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If you are looking for a reliable biosafety sealing valve manufacturer, welcome to contact us. Our engineering team can provide you with product selection, technical support and customized solutions based on your project needs.

To obtain an accurate quote quickly, please provide the following information:

  • Duct dimensions (width × height or diameter)

  • Number of valves

  • Drive mode (manual, electric or pneumatic)

  • Valve body material requirements

  • Project location

  • Other special technical requirements

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