Check valve

Non-Return Valve or Backdraft Damper for Ventilation Systems

The non-return valve or backdraft damper is an essential component in any ventilation or air extraction system. Its primary function is to prevent the backflow of air when the extractor is off, thus preventing insects, dust, dirt, or even unwanted odors from entering from the outside. With this simple but effective accessory, you can keep your ventilation system cleaner, safer, and more efficient.

Prevents the Entry of Unwanted Air and Pathogens

Thanks to its design with an internal spring-loaded flap, this valve automatically remains closed when there is no air circulation. The moment the extractor starts, the air pressure pushes the flap open, allowing free flow in the correct direction. Once the extractor stops, the valve closes again, creating a barrier that prevents the entry of outside air or the invasion of insects into the ventilation system.

Protects Your Crop and Ventilation Equipment

In indoor cultivation, maintaining a clean and contaminant-free environment is fundamental. With a backdraft damper installed in your duct, you will prevent contaminated or excessively humid air from returning to the grow space. It is also ideal for preventing stale air from one room from mixing with that of another when multiple extractors are used in the same system. This ensures more precise control of the indoor climate and greater protection against pests or pathogens.

Easy Installation and Compatible with Any System

The installation of this valve is very easy and does not require special tools. It simply fits inside the ventilation duct, ensuring that the opening direction matches the airflow of the extractor. It is compatible with flexible or rigid ventilation ducts made of aluminum or PVC, and is available in different standard diameters to adapt to any system.

Durable Materials and Efficient Design

Made of galvanized metal, the backdraft damper offers excellent durability and reliable long-term operation. Its lightweight and compact design reduces noise and vibrations, maintaining airflow efficiency without generating significant pressure losses. It is an ideal accessory for both extraction, ventilation, and air conditioning systems as well as professional cultivation installations.

Technical Specifications

• Product Type: Non-return valve or backdraft damper
• Function: Prevents air backflow and insect entry
• Material: Galvanized metal
• Compatibility: Flexible and rigid ventilation ducts
• Mechanism: Automatic spring-loaded flap
• Installation: Manual, no tools required
• Applications: Ventilation, extraction, air conditioning, and indoor cultivation

In summary, the non-return valve or backdraft damper is an essential accessory to keep your ventilation system clean, safe, and efficient. Its installation will prevent air leaks, cross-contamination, and insect entry, improving the hygiene and performance of your grow space or ventilation system.