The Main Structural Features And Applications Of Ball Valves

First, structural characteristics
1.1 Spherical structure
The key part of the ball valve is the ball, and when the fluid path of the ball valve is fully opened or closed, the ball can be rotated 90 degrees, so the structural design of the ball is very important for the normal operation of the ball valve. The ball is usually made of stainless steel, copper, titanium alloy and other materials, which have the characteristics of corrosion resistance, high temperature resistance, wear resistance and so on.
1.2 Sealing structure
The sealing performance of the ball valve is one of the main advantages of the ball valve, so the seal structure design of the ball valve is also very important. There are two kinds of common sealing structure designs: elastic seal and metal seal, among which the elastic seal is suitable for medium and low pressure fields, with the characteristics of good sealing and light operation, while metal seals are suitable for high pressure and high temperature fields, and have the advantages of more reliable sealing performance.
1.3 Handle structure
The handle structure of the ball valve can be divided into two types: one is a fixed handle and the other is a rotary handle. The fixed handle is generally used for small-diameter ball valves, which has the characteristics of simple and compact operation, while the rotary handle is suitable for large-diameter ball valves, which is flexible and convenient to operate.
Second, the scope of application
Ball valves have the advantages of simple structure, good sealing, and low fluid resistance, and are widely used in fluid control in various fields. It is mainly used in petrochemical, chemical, metallurgy, electric power, papermaking, food and other industries. Especially in industrial pipelines, ball valves occupy a large proportion.
Third, the key points of maintenance
The daily maintenance of the ball valve is very important, which can effectively extend the service life of the ball valve and reduce the frequency of repair and replacement. For the maintenance of ball valves, the following points need to be noted:
3.1 Regular inspection and cleaning
During the use of ball valves, they are susceptible to the erosion of various substances, so it is necessary to regularly check the cleaning of the inside of the ball valve and clean it in time. At the same time, check the sealing performance and operation performance of the ball valve to ensure the normal operation of the ball valve.
3.2 Regular lubrication
Ball valves need to be lubricated regularly during use to ensure the normal operation of the stems, bearings and other mechanical parts of the ball valves. The lubricating oil of the ball valve should be selected according to the use environment and requirements of the ball valve.
3.3 Protection against impact and damage
During the use of the ball valve, attention should be paid to prevent impact and damage, and avoid unnecessary damage to the ball valve. At the same time, it is necessary to ensure that the use environment of the ball valve is dry, ventilated and clean to avoid corrosion.