Design feature：

• Goose-neck ventilation tube system is made of non-combustible materials.

• The main air inlet of gooseneck ventilation tube system should be able to be closed outside the ventilated place.

• The damper or fire damper set on the gooseneck ventilator should be convenient for personnel to operate or maintain.

• In order to ensure the air flow, there should be a certain inclination angle along the air flow direction when the gooseneck ventilation tube is installed.

Matters need attention：

• Regular cleaning: The semi-gooseneck vent will accumulate dust and dirt after being used for a period of time, so it needs to be cleaned regularly to ensure the ventilation effect.

• Safe use: Pay attention to safety when using the semi-gooseneck vent, and do not touch the rotating parts inside the vent with your hands.

• Avoid blockage: When using the semi-gooseneck ventilation tube, it is necessary to avoid blockage. If poor ventilation is found during use, it is necessary to clean the passage in time.

• Pay attention to maintenance: when using the semi-gooseneck ventilation tube, pay attention to maintenance, check the running state of the ventilation equipment regularly, and repair or replace it in time if it is abnormal.

• Reasonable use: When using the semi-gooseneck ventilation tube, it needs to be used reasonably, and it should not be used excessively or for a long time, so as not to affect the service life and effect of the equipment.

Drawing：

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