| 摘要 |
A shutoff double-seat valve has a body with inlet and outlet branch pipes, lower and upper seats, shutoff elements with rod that is brought into action by drive. At that the lower end of the rod is installed with possibility of displacement in guide bushing placed in the lower part of the body. In the upper and the lower parts of the body he first and the second radial channels are provided, those connect control cavity of drive and cavity between the lower end of the rod and the lower end of the body, respectively, to control lines. |
