One-piece ball valve

Parameter 

Description

Although one-piece ball valves and flanged gate valves belong to the same type in the large family of valves, there are obvious differences between them. Among them, the most significant difference is that their closing parts are different. The closing part of a one-piece ball valve is a sphere, which can be rotated around the center line of the valve body to realize the opening and closing of the valve by rotation. The flange gate valve usually uses the gate plate as the closing part, and controls the flow of the medium by the rise and fall of the gate plate.

Ball valves play a vital role in piping systems. It is mainly used to cut off, distribute and change the flow direction of the medium. Whether in petroleum, chemical, electric power or other industrial fields, ball valves are one of the indispensable equipment. Its unique design and working principle enable the ball valve to quickly and accurately control the flow of the medium to meet a variety of complex process requirements.

Among many types of ball valves, the Guang-type ball valve is a new type of valve that is widely used. It has won the favor of the market with its unique structure and superior performance. The Guang-type ball valve not only inherits the advantages of the traditional ball valve, but also innovates and improves in some aspects, making it more suitable for the needs of modern industry. For example, the sealing performance of the Guang-type ball valve is better, which can effectively prevent the leakage of the medium; At the same time, it is also easier to operate, greatly reducing maintenance costs. Therefore, the Guang-style ball valve has been widely used and promoted in various fields.

Advantage

The resistance encountered by the fluid flowing through the pipe is relatively small because the device is designed so that its resistance coefficient is consistent with the length of the pipe section. This design helps to reduce energy loss and improve fluid transfer efficiency.

The structural design of the device is very simple, the overall size is small, and the weight is relatively light. Such a design is not only easy to install and handle, but also reduces the material cost and manufacturing difficulty to a certain extent.

The sealing performance of the equipment is very excellent, and the sealing surface material is widely used in plastic and other materials to ensure a good sealing effect. Because of this, it is also widely used in vacuum systems, and can meet the needs of a variety of harsh use environments.

The operation is very convenient, just rotate the handle 90 degrees to achieve the function of full opening or full closing. This design gives the device a great advantage in terms of remote control, and the user can easily switch operation through remote control.

The maintenance work is very simple and convenient, because the structural design of the equipment is relatively simple, the sealing ring is usually a moving part. Therefore, when disassembling and replacing, users can quickly complete related operations, greatly reducing maintenance costs and time.

When the device is fully open or fully closed, the sealing surface of the ball and seat is completely isolated from the medium. In this way, the medium will not erode the sealing surface when passing through the valve, thus ensuring the long-term stable operation of the equipment.

The scope of application of the equipment is very wide, whether it is the diameter size or the working pressure range has a strong adaptability. From the tiny few millimeters to the huge few meters can meet the needs; At the same time, it can work stably in various environments from high vacuum to high pressure. When the ball is rotated 90 degrees, the inlet and outlet should all take on a spherical shape, effectively cutting off the flow.

Structural characteristics

Frictionless opening and closing. This excellent function completely solves the problem that the sealing effect of traditional valves is affected by the friction between the sealing surfaces. In the traditional valve design, the friction between the sealing surface will not only lead to reduced sealing performance, but also may cause problems such as leakage, which brings hidden dangers to the normal operation of the equipment. The use of advanced design concept and manufacturing process, so that the valve in the opening and closing process to achieve zero friction, to ensure that the sealing surface intact, thus greatly improving the sealing performance of the valve, so that it can be stable and reliable operation in a variety of complex working conditions.

Top type construction. This unique design allows the valve installed on the pipeline to be directly checked and repaired online, which greatly improves the maintenance efficiency of the equipment. In the traditional valve installation method, once the valve fails, it is often necessary to stop the entire device for disassembly, inspection and maintenance, which will not only consume a lot of time and labor costs, but also affect the production schedule. The valve of the mounted structure can be easily operated on the pipeline, without removing the entire device, and can complete the inspection and maintenance work by simple steps, effectively reducing the time of device parking, reducing production costs, and improving production efficiency.

Single seat design. This innovative design eliminates the problem of safe use of the valve cavity media due to abnormal pressure boost. In the previous multi-seat valve design, when the medium pressure is abnormally elevated, the medium in the central cavity may not be discharged normally, resulting in safety hazards. The valve with single seat design can optimize the internal structure, so that the medium in the cavity can be discharged smoothly when the pressure is abnormally elevated, avoiding the safety accident caused by the pressure accumulation, and providing a strong guarantee for the safe operation of the equipment.

Low torque design. The specially designed stem can be opened and closed easily with a small handle valve. This design fully considers the convenience and comfort of the operator, and greatly reduces the difficulty and labor intensity of the operation. In the process of opening and closing the traditional valve, it often requires a large torque to achieve, which not only requires the operator to have a large force, but also may lead to inaccurate and untimely operation, affecting the normal opening and closing of the valve. The low torque design of the stem can be easily operated through the small handle, even female operators can easily perform, improving the ease of operation and accuracy.

Wedge sealing structure. The valve is sealed by the mechanical force provided by the valve stem, and the ball wedge is pressed to the seat, so that the sealing of the valve is not affected by the change of the pressure difference of the pipeline, and the sealing performance is reliably guaranteed under various working conditions. This wedge-shaped sealing structure can effectively adapt to different pipeline pressure differences, whether it is under high or low pressure conditions, it can maintain good sealing performance. The principle is that through the mechanical force applied by the valve stem, the ball is tightly pressed on the seat, forming a reliable sealing surface to prevent the leakage of the medium. At the same time, this structure also has good wear resistance and corrosion resistance, and can operate stably in harsh working environments for a long time.

Self-cleaning structure of sealing surface. When the ball tilts away from the seat, the fluid in the pipeline passes 360° evenly along the sealing surface of the ball, which not only eliminates the local erosion of the high-speed fluid on the seat, but also washes away the accumulation on the sealing surface to achieve the purpose of self-cleaning. The design of this self-cleaning structure cleverly utilizes the flow characteristics of the fluid. When the ball leaves the seat, the fluid will form a uniform liquid film on the surface of the ball. This layer of liquid film can take away the impurities and dirt on the sealing surface, avoid the accumulation of impurities and the formation of dirt, so as to keep the sealing surface clean and smooth. This not only improves the sealing performance of the valve, but also extends the service life of the valve and reduces maintenance costs