HVLS Fan Buying Guide: Everything to Know Before Purchasing

Sep. 08, 2025

HVLS Fan Buying Guide: Everything to Know Before Purchasing

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1 - Dripping water, and falling vertically will have no harmful effect. Must pass a test duration of 10 minutes, with water dripping equivalent to 1 mm of rainfall per minute.2 - Dripping Water, while tilted up to 15 degrees will have no harmful effects. This level means it must pass a test duration of 10 minutes, with water dripping equivalent to 3 mm of rainfall per minute.3 - Spraying water at an angle of up to 60 degrees from vertical will have no harmful effects. This level means it must pass a test duration of 5 minutes with a water volume of 0.7 liters per minute, with a pressure of 80 - 100 KN/m^2.4 - Water that is splashed against the enclosure from any direction will have no harmful effects. This level means it must pass a test duration of 5 minutes, with a water volume of 10 liters per minute, and a pressure of 80‐100 KN/m^2 .5 - Water jets with a 6.3 mm nozzle aimed at an enclosure from any direction will have no harmful effects. This level means it must pass a test duration of a minimum of 3 minutes, with a water volume of 12.5 liters per minute, and pressure of 80‐100KN/m^2 .6 - Powerful water jets from a 12.5 mm nozzle, aimed at an enclosure from any direction, will have no harmful effects. This level means it must pass a test duration of 3 minutes minimum, with a water volume of 100 liters per minute, with a pressure of 100KN/m^2 , at a distance of 3 meters.7 - Can be immersed in water for 30 minutes, at a depth of 1 meter, and will have no harmful effects.8 - Continuous immersion in water under conditions specified by the manufacturer. Typically, the equipment is hermetically sealed.