Double Bypass Element with 2x75 Plastic Connectors

The PK series double bypass element (also known as a crossover bridge or air tunnel) is a specialized installation component designed for the simultaneous cross-over bypass of two ventilation routes or other utility lines. This solution allows for the continued parallel routing of two 75mm flexible ducts when encountering obstacles in height-restricted ceiling voids or floor screeds.

The modification features a bypass recess depth of 44 mm, allowing it to safely cross over utilities of corresponding height. The use of high-impact plastic connectors in the PK series ensures rigid fixation of the flexible duct and guarantees consistent joint airtightness. The compact housing geometry is engineered to minimize aerodynamic resistance while maintaining a low profile.

The unit housing is constructed from galvanized steel, providing high resistance to corrosion and mechanical loads from building structures.

Design Features:

• Double Bypass: The design allows for crossing over obstacles with two parallel duct lines simultaneously, maintaining system organization.
• Recess Geometry: The 44 mm depth enables passage over objects without a significant increase in the total thickness of the ventilation layer.
• Plastic Connectors: Equipped with an integrated end seal to achieve standard joint airtightness without the use of silicone or sealing tapes.
• Mechanical Fixation: The locking latch system on the connectors securely blocks the flexible ducts, preventing accidental disconnection under air pressure or during installation.
• Installation: Standard mounting lugs are provided on the housing for rigid fixation of the unit to load-bearing slabs.

Technical Specifications:

• Housing Material: Galvanized steel
• Connector Material: High-impact plastic
• Number of Ports: 2 inlets / 2 outlets
• Connection Diameter: 75 mm
• Bypass Recess Depth: 44 mm
• Overall Dimensions (LxWxH): 461 x 221 x 85 mm
• Compatibility: 75 mm round flexible ducts

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