Спеціальне Конструкторсько-Технологічне Бюро Інститута Геотехнічної Механіки Ан України
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Machine includes two chambers, two upper and one lower gates with pressing devices placed in sockets with covers. It is equipped with command apparatus, two position valves and diaphragms, at that the diaphragms are installed after covers of gates with possibility of interaction with pressing device and formation of cavity between diaphragm and cover, and the cavities are connected through two-position valves in sequence or with network of compressed air.