Circular airtight check valves KZK2 / KZK2-S

The circular air-tight check valves KZK2 / KZK2-S are used to prevent air backflow through the technical piping. The KZK2 / KZK2-S airtight check valves have a reinforced wing design to provide greater tightness in the duct and are designed for direct insertion into ventilation ducts with diameters of 80 mm, 100 mm, 125 mm, 150 mm, 160 mm and 200 mm, for KG (orange duct) 110 mm, 125 mm and 160 mm.