Clinical valves are a highly effective locking reinforcement for pipeline systems. Their design is a shutter, which moves along the perpendicular axis in accordance with the flow of the working environment during the overlap or opening of the pipeline. The wedge valves got their name thanks to a shut -off element, which in shape resembles a wedge. Structurally, this part narrows to the end and closes two sides of the valves, which are located at the corners to each other.
In accordance with the functions that the wedge valve performs, it traditionally belongs to the category of shut -off valves. This equipment is designed to thoroughly overlap the flow of the working environment of the pipeline. At the same time, a wedge -type valve can be in two positions: completely closed and completely open.
Staying on the design of the wedge valves in more detail, it should be said that the saddle of the device is a hole designed to pass the working flows when the valve is open. In the raised position of the clin of the saddle are located on both sides of it, which allows the working environment of the pipeline to pass through the valve, connecting fittings and get directly into the system. The most popular disappointment is the gap of the wedge flange cast -iron.
In the lowered position of the wedge, the saddle is overlapped, which, accordingly, prevents the further movement of working flows. Raising the shutter occurs due to its winding on a spindle (an element with a thread), connected to the shutter by means of a special nut. This constructive element performs rotational or rotational movements, which allows it to carry the wedge along. In conditions of manual control, spindle turns are carried out using a handle, with automatic functioning, the work of the wedge valves controls the drive.
Depending on the characteristics of the pipeline system, full -pass and narrowed valves are used. The first type of locking equipment has the diameter of the sealing rings, which is equal to the diameter of the opening of the pipeline, respectively, in the second case, the diameter of the valve will be less. Clinical valves are also distinguished by the nature of the movement of the spindle or rod. According to this parameter, they are divided into models with an unreal and retractable rod/spindle. The equipment of the first type differs in that its building height remains unchanged, while the rod makes a rotational movement. In retractable wedges, the spindle carries out rotational movements, increasing the building height of the equipment.
