Weather protection grilles combined with a louver valve or pressure relief valve have a double function in the intake and outlet air openings of ventilation systems. They prevent rainwater and foreign substances from entering and offer the possibility of air quantity regulation and blocking of the louver in the case of a system standstill.
Combination weather protection grille with a louver valve: This component assembly consists of a weather protection grille, series WSG-S or WSG-A and a louver valve, series JK-I-S 100 or JK-I-S 165. Via a specially shaped frame at the louver valve, both components are firmly attached to each other. Combination weather protection grille with a pressure relief valve: This component assembly consists of a common frame that contains the basic components of series WSG-S or WSG-A, and of series ÜDK.