Blauberg Anti-Return Clapper

Non-return valve to close the air in your crop

The non-return valve is an essential part to hermetically close the air inlet to the crop through the extraction and ventilation ducts when the extractor is not working. In this way, you manage to prevent insects from entering and indiscreet odors from leaving. Closing the ducts with the non-return valve will prevent air from entering freely . This is very important if you take into account that the air that enters will leave again without passing any anti-odor filter. By preventing air from entering and leaving, you avoid this situation. The non-return valve is a piece that comes in handy in situations where you have a circuit with extractors or if the crop is located in a very windy area.

How to install a non-return valve in your ventilation system?

Installation in the ventilation system of your crop is very simple. The most important thing in this case is to choose the valve with the mouth size equal to that of the extractor so that both fit perfectly. Once you have the valve, you just have to attach it to the extractor with a reflective tape or flexible tube . It must be placed in the way that it opens in the direction that the air comes out of the duct. The non-return valve has a small spring-loaded flap . This only opens if the flow blows in the correct direction. If you press the hatch with your fingers, you can see which direction it opens.

What sizes are there?

There are different mouth sizes to buy the most suitable non-return valve . These sizes are 100, 125, 150, 200, 250 and 315 millimeters.