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Check valve
€10.00
5/5
(10 Ratings)
Non-return valve or backdraft damper for ventilation systems. Automatically closes your ventilation duct when not in use.
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Description
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.
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14/10/2025
Why didn't I install it sooner? I had issues with cold outdoor air coming in through the intake fan when it was off. With this, problem solved. Really efficient.
Translated from Spanish
¿Cómo no lo puse antes? Tenía problemas con el aire frío de la calle entrando por el intractor cuando se apagaba. Con esto, adiós problema. Realmente eficiente.
05/10/2025
Perfect.
Translated from Spanish
Perfecto.
04/10/2025
Very good product if you don't want to be bothered anymore by cold or hot backdrafts
Translated from French
Très bon produit si vous ne voulait plus être embêté avec les retours d’air frais ou chaud
27/09/2025
This is just what I needed for the extractor. No more backdraft smells. Works like a charm, doesn't disrupt the airflow. Very happy.
Translated from Spanish
Esto es justo lo que necesitaba para el extractor. Se acabaron los retornos de olor. Funciona de maravilla, no molesta el flujo de aire. Muy contento.
03/09/2025
Does this restrict the airflow if I put it on the extractor?
Translated from Spanish
¿Esto restringe el caudal de aire si lo pongo en el extractor?
01/08/2025
Does what it's supposed to do. No more nasty smells from the extraction system. Installation was easy.
Translated from German
Macht, was es soll. Keine unangenehmen Gerüche mehr aus dem Abluftsystem. Montage war einfach.
26/07/2025
Works great. Installed on a 150 and noise doesn't increase at all, which I was worried about thinking it might not let the air through properly. Honestly, super good.
Translated from Spanish
Va genial. Puesto en un 150 y el ruido no aumenta nada, que me daba cosa si no iba a dejar pasar bien el aire. Súper bien, la verdad.
15/06/2025
Easy to set up and does its job perfectly. Very handy.
Translated from Spanish
Fácil de poner y cumple su función perfectamente. Muy útil.
06/11/2020
Ideal for very windy and cold areas, keeps air from returning to your grow when the light or your fan turns off, very useful
Translated from Spanish
Idial para zonas de mui veinto e frio impide quel aire retorne a tu cultivo quando la luz o tu ventilador se desconecta mui util
06/11/2020
great , exactly what I needed
Translated from Spanish
genial , precisamente lo que necesitaba