TPI-Polytechniek offers OmniStep, an air inlet valve. The polyurethane air inlet valve is designed to be used in buildings where birds are kept in different levels above the ground. The OmniStep creates an indirect airflow to avoid air being directed straight to the birds. There are three stages of opening: first stage, air is directed upwards to the ceiling; second stage, air is directed upwards and downwards; and third stage, air is directed downwards.
