Analysis of the reasons for the hot stainless steel ball valve market
In today's valve market, stainless steel valves are extremely "hot"! Stainless steel ball valve is a widely used valve. Generally, cut-off devices with a diameter of DN≥50mm are selected for use. Sometimes stainless steel ball valves are also used for cut-off devices with small diameters. It has simple structure, flexible operation, light weight, no jamming, and special It is suitable for the transportation and flow adjustment of all kinds of solid materials and massive and mass materials. The installation is not limited by the angle, the operation is convenient, and the scale can be adjusted at any time. Stainless steel ball valves are now strongly demanded by consumers in the market. What characteristics have attracted countless manufacturers' enthusiasm?
As a brand-new full-bore structure valve, the diameter of the valve is the same as the internal flow rate, and it is manufactured with a reduced diameter process like ordinary ones. It is suitable for working conditions with particularly high flow requirements, such as petroleum, chemical, electric power, metallurgy, electric power and other industries. Manufactured with an overall full bore, the valve flow path is completely unblocked, and the head loss is zero; the stainless steel valve has extremely reliable sealing performance, wear resistance and long service life. After opening, the spherical crown is biased in the valve body and is not directly washed by the medium. In addition, with automatic cleaning function, the edge of the ball crown of the hard-sealed stainless steel valve adopts a knife-edge shape, which can effectively remove pipeline debris. In addition, stainless steel valves have some unique features that meet the necessary requirements for the development of the country in a wide range of fields today, which is why this type of new stainless steel valves will rise so rapidly.
Stainless steel ball valve has the following advantages:
1. The fluid resistance is small;
2. The external force required for opening and closing is small;
3. The flow direction of the medium is not restricted;
4. When fully open, the sealing surface is less eroded by the working medium than the stop valve;
5. The body shape is relatively simple, and the casting process is better.
Several elements of stainless steel ball valves are now favored by consumers:
1. Automatic compensation and reliable sealing: When positive pressure, the eccentricity principle is used to close the stainless steel valve ball and valve seat tighter and tighter, so as to obtain a good seal; when back pressure, the stainless steel valve floating seat is under pressure, the valve The seat is automatically pushed to the sphere. The higher the pressure, the tighter and tighter the stainless steel valve seat will be to the sphere, thereby obtaining a good seal; it can maintain a long-lasting tight seal and adapt to harsh working conditions. Under long-term use, if the valve seat seal is worn or damaged, the valve seat is automatically pushed against the ball under the action of the spring, so as to obtain a good automatic compensation function.
2. Suitable for high-velocity media: because the stainless steel valve ball is hidden on one side of the valve cavity, a straight flow channel is formed without flow resistance. The solid eccentric fixed crankshaft has no vibration and noise in the high-velocity medium.
3. Long life and easy switching: no vulnerable parts, due to the effect of eccentricity, the sealing surface of the sphere and the valve seat of the stainless steel valve is completely separated during the opening and closing process of the stainless steel valve, so that the surface of the valve seat and the spherical surface of the spherical crown can rotate without friction. The operating torque is effectively reduced, and the operation is light and handy; the automatic compensation function of the stainless steel valve greatly improves the life of the valve.
