Sanitary grade ball valve, ball valve

Shanghai Jingdie Valve Manufacturing Co., Ltd. is a professional enterprise engaged in the research, development, manufacturing, testing, and sales of valve products; It is Shanghai, which has passed ISO9001-2008 quality system certification and the Special Equipment Manufacturing License "TS" certification issued by the General Administration of Quality Supervision, Inspection and Quarantine of China.

Sanitary grade ball valve

Product Introduction: Sanitary two-piece ball valves are mainly used in pipelines to cut off, distribute, and change the flow direction of media. Two piece ball valves can be tightly closed with only a 90 degree rotation and a small rotational torque.

Product Description

1. The fluid resistance is small, and its resistance coefficient is equal to that of a pipe segment of the same length.
2. Simple structure, small size, and light weight.
3. Tight and reliable. Currently, plastic is widely used as the sealing surface material for ball valves with good sealing performance, and it has also been widely used in vacuum systems.
4. Easy to operate, quick opening and closing, only need to rotate 90 ° from fully open to fully closed, making it convenient for remote control.
5. Easy maintenance, simple ball valve structure, and generally movable sealing rings make disassembly and replacement relatively convenient.
When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and when the medium passes through, it will not cause erosion of the valve sealing surface.
7. It has a wide range of applications, with diameters ranging from a few millimeters to several meters, and can be used from high vacuum to high pressure.

Sanitary grade two-piece ball valves are mainly used in pipelines to cut off, distribute, and change the flow direction of media. Ball valves can be tightly closed with only a 90 degree rotation and a small rotational torque. *The equal inner cavity of the valve body provides a low resistance and straight passage for the medium. It is generally believed that ball valves are suitable for direct opening and closing, but recent developments have designed ball valves to have throttling and flow control functions. The main characteristics of sanitary grade two-piece ball valves are their compact structure, easy operation and maintenance, suitable for general working media such as water, solvents, acids, and natural gas, and also suitable for harsh working conditions such as oxygen, hydrogen peroxide, methane, and ethylene. The valve body of a ball valve can be integral or modular. Ball valve is a relatively new type of ball valve, which has some inherent structural characteristics, such as frictionless opening and closing, low sealing wear, and small opening and closing torque. This can reduce the specifications of the accompanying actuator. Equipped with a multi turn electric actuator, it can achieve adjustment and tight cutting of the medium. Widely applicable to working conditions such as petroleum, chemical, urban water supply and drainage that require strict cut-off.
Working principle of sanitary two-piece ball valve:

Opening process
In the closed position, the ball valve ball is tightly pressed against the valve seat by the mechanical pressure of the valve stem.
When the handwheel is turned counterclockwise, the valve stem moves in the opposite direction, and its bottom angular plane causes the ball to detach from the valve seat.
3. The valve stem continues to lift and interacts with the guide pin in the spiral groove of the valve stem, causing the ball to start rotating frictionlessly.
4. Until it reaches the fully open position, the valve stem is lifted to the limit position, and the ball rotates to the fully open position.
Closing process
When closing, rotate the handwheel clockwise and the valve stem begins to descend, causing the ball to move away from the valve seat and begin to rotate.
2. Continue to rotate the handwheel, and the valve stem is acted upon by the guide pin embedded in its spiral groove, causing both the valve stem and the ball to rotate 90 ° simultaneously.
3. As the valve is about to close, the ball has already rotated 90 ° without contact with the valve seat. After a few turns of handwheel rotation, the angular plane at the bottom of the valve stem mechanically wedges and presses the ball tightly against the valve seat, achieving * sealing.

Structural characteristics of sanitary two-piece ball valve

1. Open and close without friction. This function solves the problem of traditional valves affecting sealing due to friction between sealing surfaces.
2. Top mounted structure. Valves installed on pipelines can be directly inspected and repaired online, which can effectively reduce equipment downtime and lower costs.
3. Single seat design. Eliminating the issue of abnormal pressure rise in the valve chamber medium affecting safety during use.
4. Low torque design. The specially designed valve stem can be easily opened and closed with just a small handwheel valve.
5. Wedge shaped sealing structure. Valves rely on the mechanical force provided by the valve stem to press the ball wedge onto the valve seat for sealing, ensuring that the sealing performance of the valve is not affected by changes in pipeline pressure difference, and reliable sealing performance is guaranteed under various working conditions.
6. Self cleaning structure of sealing surface. When the sphere tilts away from the valve seat, the fluid in the pipeline passes uniformly along the sealing surface of the sphere at a 360 ° angle, which not only eliminates the local scouring of the valve seat by high-speed fluid, but also washes away the accumulated substances on the sealing surface, achieving the purpose of self-cleaning.

Structural types of sanitary two-piece ball valves

According to the sealing mechanism of the structure, stainless steel ball valves are divided into floating ball valves and fixed ball valves. The former mainly relies on medium pressure to press the sphere onto the outlet valve seat, and its usage pressure and diameter are subject to certain limitations. The latter's sphere is supported by two upper and lower bearings installed on the valve body, and the position of the sphere is fixed. The sealing effect is achieved by the spring and medium pressure pressing the valve seat against the sphere. Therefore, the opening and closing torque is relatively small, making it suitable for high-pressure and large-diameter applications.

Ordering Notice: (National Standard)
1、 A: Product name, model, nominal diameter B: Medium and temperature, pressure range C: Are there any accessories, delivery time, special requirements, etc. for us to correctly select for you.
2、 If the valve model of our company has already been selected by the design unit, please place an order directly with our sales center based on the valve parameters.
3、 When the situation you are using is very important or the environment is complex, please provide design drawings and detailed parameters, and our engineers and experts will focus on reviewing and analyzing for you.
4、 The above prices are all fictitious. Interested parties please contact us.
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