It is a heated, mechanically operated valve with two airtight mobile flaps, allowing airflow in either direction.
A – THE MECHANICAL ELEMENT
The outside of the valve is made of a support profile, mobile flaps made of anodized aluminium, and positioned by two composite boxes, all of which are protected by a cover made of shock polystyrene. The two mobile flaps comprise anodized aluminium plates and elastomer to ensure tightness.
This unit is fixed to a tubular cross bar made of anodized aluminium and equipped with a grill on the inside.
B – THE HEATING ELEMENTS
A heating cord is wrapped around the crossbar, ensuring it remains frost-free.
The mobile flaps seat is heated by an independent heating cord. The heating cords require a supply of 220 V with an earth connection and a power of approximately 185 Watts.
The connection is made outside the cooling chamber, directly into a composite box.
Two thermal contacts control the temperature of the tube and the mobile flaps seat and are suitable to connect to an alarm device.
