PRESSURE EQUALIZATION DEVICE AND LOCK USED IN THE DEVICE

FIELD: buildings adapted to withstand or provide protection against abnormal external influences, pressure equalization equipment, particularly for atomic power stations and in chemical industry. ^ SUBSTANCE: device to equalize pressure in adjacent cavities divided with partition comprises body built in the partition, panel and sealing means. Panel is made as at least one flap and is connected to flap pin connected to the body. The body has retainer to fix the flap in closed position. Flap comprises lock provided with flap opening force regulation member. The regulation member includes flexible torsional part. One end of the flexible part is fixedly secured to cam. The cam has groove and is made as sliding member corresponding of retainer lock so that axis of cam rotation passes through the flexible part. Another end of flexible part is inserted in clamp and may be moved in the clamp. The cam is connected to flap so that the cam may rotate about axis of cam rotation and in closed flap position flap retainer is located in cam groove to prevent flap rotation about its axis. Clamp is connected to flap so that the clamp may be displaced across the flap along flexible part. ^ EFFECT: increased response accuracy under predetermined pressure drop. ^ 5 cl, 2 dwg