Flexible ventilation ducts

Flexible ventilation ducts are used for carrying the wind at:

• underground mining activity
• car and railroad tunnelling
• collectors construction
• ventilation of industrial buildings
• others

Flexible ventilation ducts are approved for use in areas of gaseous mines with dangerous atmospherical conditions 2 and 1 according to ČSN EN 1127-2.

They are manufactured in two options:

• Overpressure (blowing) only for overpressure ventilation. They are manufactured in diameters from 200 mm to 2400 mm and length up to 100m/piece
• Universal (suction). They are used for suction, blowing ventilation. They are manufactured in diameters from 200 to 1200 mm and length up to  10 m/piece.

use of universal ventilation ducts while tunnelling the tunnel body	use of universal flexible ventilation ducting with suction ventilation
use of overpressuse blowing ventilation duct at mining activity	universal ventilation duct while tunnelling an exploraotry gallery
tests of overpressure ducts	connecting of overpressure ducts by means of spacer and galvanized quick release lock

joining of overpressure ducting by means of a galvanized quick release lock