Valve for cold chamber storing food product, has flaps for closing respective pipes, and maintained in support against sealing seats by weight of flaps when pressure variation on both sides of each flap is less than threshold value

摘要

The valve (2) has an air passage duct (10) comprising a partition (36) separating the duct into two pipes (38, 40) that are closed by respective flaps (42, 44). Each flap has a shutter articulated around an articulation axis. A sealing seat e.g. rib, is extended on entire periphery of each pipe. The flap is maintained in support against the seat by weight of the flap when pressure variation on both sides of the flap is less than a threshold value. An independent claim is also included for a cold chamber comprising a wall provided with an orifice.