CONTROL DEVICE Russian patent published in 2005 - IPC

FIELD: valving.

SUBSTANCE: device comprises housing with inlet and outlet passages and through opening in the seat, flat gate valve provided with the opening, and insert. The gate valve is connected with the rod of the drive. The housing is provided with vertical passage and outlet passage which are arranged downstream of the seat from the side of the rod. The vertical passage connects the inlet passage to the outlet passage. The housing receives a valving member with a sealing surface. The valving member is mounted for permitting interaction with additional seat through the sealing surface and movement over the seat.

EFFECT: enhanced reliability and efficiency of the device.

2 dwg