The closing part of the stainless steel three-way flanged ball valve is a sphere, and the sphere rotates around the center line of the valve body to open and close a valve.
1. Friction-free opening and closing: completely solve the problem that the traditional valve affects the sealing due to the friction between the sealing surfaces;
2. Top-loading structure: the valve installed on the pipeline can be directly inspected and maintained online, which can effectively reduce the shutdown of the device and reduce the cost. This type of valve should generally be installed horizontally in the pipeline;
3. Single valve seat design. Eliminates the problem that the medium in the middle cavity of the valve affects the safety of use due to abnormal pressure increase;
4. Low torque design. The ball valve flange type stem with special structure design can be easily opened and closed with only a small handle valve;
5. Linear sealing structure. The valve is sealed by pressing the ball on the valve seat by the mechanical force provided by the valve stem, so that the sealing performance of the valve is not affected by the change of pipeline pressure difference, and the sealing performance is reliably guaranteed under various working conditions;
6. Self-cleaning structure of sealing surface. When the ball is tilted away from the valve seat, the fluid in the pipeline passes 360° evenly along the sealing surface of the ball, which not only eliminates the local scouring of the valve seat by the high-speed fluid, but also washes away the accumulation on the sealing surface. , to achieve the purpose of self-cleaning.
1. The fluid resistance is small, and its resistance coefficient is equal to that of the pipe section of the same length;
2. Simple structure, small size and light weight;
3. It is tight and reliable. At present, the sealing surface material of stainless steel three-way flange ball valve is widely used in plastic, with good sealing performance, and it has also been widely used in vacuum systems;
4. Easy operation, quick opening and closing, only need to rotate 90° from fully open to fully closed, which is convenient for long-distance control;
5. It is easy to maintain, the ball valve has a simple structure, the sealing ring is generally movable, and it is more convenient to disassemble and replace;
6. When fully open or fully closed, the sealing surfaces of the ball and the valve seat are isolated from the medium, and the sealing surface of the valve will not be eroded when the medium passes through;
7. Wide range of applications, diameters ranging from small to several millimeters, large to several meters, and can be applied from high vacuum to high pressure.
1. Leave the position where the valve handle rotates;
2. Can not be used for throttling;
3 The ball valve with the transmission mechanism should be installed upright.
The valve is opened or blocked by rotating the spool. The ball valve switch is light, small in size, can be made into a large diameter, reliable sealing, simple structure, convenient maintenance, sealing surface and spherical surface are often in a closed state, not easy to be eroded by media, and are widely used in various industries.
1. The opening process
In the closed position, the ball of the stainless steel three-way flanged ball valve is tightly fitted with the valve seat, and the ball is tightly pressed on the valve seat;
When the handle is turned counterclockwise, the valve stem moves in the opposite direction, and the ball rotates until the flow channel hole is facing the direction of the pipeline, reaching the fully open position.
2. The closing process
When clockwise to close valve, the valve stem starts to drive the ball to rotate;
Continue to rotate the handle, the valve stem is acted by the guide pin embedded in the upper spiral groove, so that the valve stem and the ball rotate 90° at the same time;
When it is about to close, the ball has rotated 90° without contacting the valve seat;
When the stainless steel three-way flanged ball valve ball is tightly pressed on the valve seat, a complete seal is achieved.