Gate valve for blocking a pipe

摘要

A gate valve for blocking a pipe, wherein the gave valve comprises a valve body and a wedge, which is insertable into a wedge receptacle disposed in the valve body, wherein the wedge has a wedge plate on at least one side in the passage direction of the pipe, which is disposed on the wedge with a clearance in the direction of the center longitudinal axis of the pipe, wherein the wedge plate is adapted to be pressed by at least one elastic element against the wedge receptacle in the valve body, wherein the at least one elastic element is configured as an approximately circular-shaped circumferential bellows having a central opening.

主权项

1. A gate valve for blocking a pipe, the pipe having a central longitudinal axis, the gate valve comprising:
a valve body having a wedge receptacle defined therein; a wedge selectively insertable into the wedge receptacle in the valve body to an end position, the wedge having at least one side; a wedge plate disposed on the at least one side of the wedge, the wedge plate being disposed on the wedge with a clearance defined therebetween, the clearance being generally in the direction of the axis of the pipe, the wedge plate having an opening therethrough; at least one elastic element disposed in the clearance between the wedge plate and the wedge, the at least one elastic element being a generally circular-shaped circumferential bellows having a central opening; wherein when the wedge is in the end position and a medium from the pipe flows through the opening in the wedge plate into the central opening of the bellows causing a pressure acting on the bellows, the bellows is expanded by the pressure to seal the wedge plate against the wedge receptacle.