Installation of inspection hatches
Inspection hatches are mounted in a finished ventilation duct, in which the hole is cut according to attached standard in accordance with the PN-EN 12097: 2007 standard.
We distinguish two types of revision hatches - for round and rectangular (flat) ducts. All flaps settle the rubber gasket so that the edges adhere perfectly to the surface of the channel surface thus ensuring a high tightness.
The damper is installed in the duct by adjusting the surface between the two parts of the damper and the edge of the walls of the hole.
In the final stage, the pressure of the surface is adjusted by tightening the knobs - thereby regulating the pressure of the springs exerted on the surface of the gaskets.