This door avoids leaks in pressurized rooms. The structures can be manufactured in painted steel sheet or stainless steel and have been designed with a round shape to reduce dust accumulation.
The upper hood is inclined in order to suit the draining of the materials placed above. The motor has a high takeoff speed (up to 1,6 m/sec.) and is controlled by a converter. It has the last technical advances in control of position (encoder) and object detection (smart photocells barrier which controls the opening). In case of power outage, it self-opens by activating the unblocking hand.