The spindle (33) is mounted so that it can rotate about a fixed axis and can be rotationally driven back and forth by the drive.

Each pivotal connection has a respective pivot axis.

In accordance with the invention the retaining shell (40) and pivoting part (30) are pivotally mounted on a joint transverse axle (20), which is secured to a support block (10).

The spindle (33) is mounted so that it can rotate about a fixed axis and can be rotationally driven back and forth by the drive.

butterfly valve with vertical axis

sluice or valve pivoted on a vertical axis

butterfly valve with horizontal axis

sluice or valve pivoted on a horizontal axis

The handle (10) is fixed pivotably on a bearing axis (11).

The pivotal plate is pivotally connected to the stationary plate about a pivot axis.

The pivoting part has a first fulcrum at which the pivoting part is pivotably coupled to the stage, and the pivoting part is connected to the chuck part.

It comprises a frame (2), which is pivotally fastened to an axle (6).

A plane of the arc is substantially perpendicular to a rotational axis of the pivot joint.

The pivotable end defines a pivot axis and is mounted to the chassis.

The mounting system comprises a pair of mounts disposed with a fluid distributor and operational drive and a third mount disposed with a carriage The third mount is adjustable about a horizontal axis and adjustable about a lateral axis.