The Operation Of Stainless Steel Ball Valve

Aug. 12, 2019

Here is DIN Flange Swing Check Valve Factory talking about the operation of stainless steel ball valve.


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Stainless Steel Thread Globe Valve

Stainless Steel Thread Globe Valve


The stainless steel ball valve switch is light in weight and small in size, and can be made into a large diameter, reliable in sealing, simple in structure and convenient in maintenance, and is widely used in various industries. Here we mainly introduce the opening and closing operation of a one-piece stainless steel ball valve, as follows:

1. One-piece stainless steel ball valve is in the process of opening: in the closed position, the ball is pressed by the mechanical pressure of the valve stem and pressed against the valve seat. When the handwheel is turned counterclockwise, the valve stem moves in the opposite direction, and its bottom angular plane disengages the ball from the valve seat. The valve stem continues to lift and interacts with the guide pins in the stem groove of the valve stem, causing the ball to begin to rotate without friction. Until the fully open position, the valve stem is raised to the extreme position and the ball is rotated to the fully open position;

2. One-piece stainless steel ball valve is in the process of closing: When closing, the handle is rotated clockwise, the valve stem begins to descend and the ball moves away from the valve seat. Continue to rotate the hand wheel, the valve stem is subjected to the guide pin embedded in the upper spiral groove, so that the valve stem and the ball rotate 90 degrees at the same time. When it is about to close, the ball has rotated ninety degrees without contact with the seat. In the last few turns of the stainless steel ball valve handwheel, the angular plane at the bottom of the valve stem mechanically wedges against the ball, making it tightly pressed against the valve seat for a complete seal.


Stainless steel ball valve classification: stainless steel pneumatic ball valve, electric ball valve, manual ball valve. Stainless steel ball valve material is divided into 304, 316, 321 stainless steel.


Stainless steel needs to pay attention to the following points:

1. Rinse the stainless steel ball valve completely open;

2. After the stainless steel ball valve is connected with the pipeline, the flange connection bolt must be cross-locked with the specified torque;

3. Before the stainless steel flange ball valve is connected with the pipeline, the residual impurities in the pipeline must be removed;

4. During installation, the actuator portion of the ball valve is not available as a lifting point for lifting to avoid damage to the actuator and accessories;

5. Cast steel flange ball valve should be installed in the horizontal or vertical direction of the pipeline;

6. The pipe near the installation point of the cast steel ball valve can not be used with low hanging or external force, and the pipe bracket or the support can be used to eliminate the deviation of the pipeline;

7. Before installing the ball valve, the machine should be tested according to the specified signal. After passing the test, it can be installed on the line.


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Xintai Valve Group Co., Ltd.

Hot products: Stainless Steel of Ball Valve, Gate Valve, Check valve and Globe Valve

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