What is the difference between a curved flap with a double turning point (GKK) and a curved/straight flap with a single turning point (GDK/RDK)?
Scan-Air wall inlets are available in several models. Two of those models are the GKK and GDK/RDK.
The GKK (curved flap with a double turning point) is a wall inlet, consisting of a curved flap with a center hinge. Due to the center hinge, an extra airflow is created at the bottom of the inlet after the minimum ventilation phase. This also directs air in the direction of the animals, which is especially desirable for poultry and gestating sows.
The GDK (curved flap with a single turning point) or the RDK (straight flap with a single turning point) is a wall inlet, consisting of a flap with a bottom hinge. Due to the bottom hinge, there is always one airflow at every position of the flap. As a result, there is no airflow directly towards the animals, which is especially desirable for farrowing sows, fattening pigs, goats and lambs.