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Abnormality in the ball valve of the pneumatic cut-off valve

2017-12-31View Original

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Pneumatic cut-off valve, ball valve. It responds quickly when turned on. There are 2 problems when turning it off. 1. After the shutdown signal is given, it takes 4 seconds before it takes action. 2. The process from the start of the valve closing action to complete closure is very slow, taking about 5 seconds. The medium in motion are solid particles. Could you please tell me how to solve these 2 problems?
Reply #22017-12-31
It is best to discuss this with the valve manufacturer
Reply #32017-12-31
First, it is necessary to determine whether the issue lies with the actuator or the valve; if possible, try separating the actuator from the valve and test it; This can occur if there is internal leakage in the actuator ; This situation can also occur if there is sticking inside the valve; however, it is not possible to go into detail due to the lack of knowledge about the internal structure of the valve.
Reply #42017-12-31
The main issue is that the valves are sticking; you can contact me as I have solutions.
Reply #52017-12-31
If it is a pneumatic control valve, 1. The spring force of the actuator is insufficient; 2. The actuator is leaking air; 3. There is a leak in the air supply pipeline. Please check them
Reply #62018-01-02
I’d like to learn more about your manufacturing process. Could you add me on QQ? I’m unable to add you
Reply #72018-01-02
I’d like to learn more about your manufacturing process. Could you add me on QQ? I’m unable to add you

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