Air-duct Ventilator is designed for separate ventilation for mining excavation (e.g. coal mines, copper mines).
Two-speed booster fan allows to obtain the smooth start-up (no impact pressure within the suction) and displacement change the parameters of the air, for example, depending on the length of excavation. Also ventilator can run continuously on both the first and second gear.
Ventilator WL-SIGMA 900/1 can be use in rooms with “a”, “b” and “c” degree of risk of outburst of methane and at class A and B risk of outburst coal dust.
Both types of ventilators can operate in the suction and stamping ventilation system.ask about the product