This pressure controlled exhausts include a controller, a pressure meter, and a speed variable fan. This system is usually installed at the incubator exhaust space, or at the hatcher exhaust space and which is also called hatcher fluff room.
This system take out the exhaust air from the building, with a negative pressure. So that the exhaust air will not go to other space, and mix with fresh air.
It increases the hatchery hygiene, and gives the hatchery a better performance and increased standard.