What is the reason why the dark bar electric gate valve does not close

Is it just shaking, not moving? It should be a problem with the motor, check the electric actuator.

Is there something dirty in it that is stuck?

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of the user's stove.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are changing rapidly, and the rankings may vary by time and region. For the latest ranking information, it is recommended to refer to industry reports, professional institutions or market research data for more detailed and accurate information.

Usually this is the case with a weak motor

Could you please describe the phenomenon in more detail?

When opening and closing the valve, do not open and close quickly, because if the valve is opened and closed quickly on the pipeline, water hammer will be generated, and a water hammer pressure value will be generated at the pipe section close to the valve.

According to the calculation, for every 1 m s change in the liquid flow rate of the pipeline, the pressure value generated by the liquid can reach 1 MPa, and not only that, this pressure value is also propagated upstream in the form of water shock wave from the pipe section close to the valve at a speed close to the speed of sound (the speed of sound in water is 1500 m s, and the speed in gasoline is 1100 m s), and it is superimposed with the original pressure at each point along the pipeline, which may reach the point of bursting the pipeline.

When the valve is opened and closed slowly and gradually, because in the instantaneous time, the speed change is small, and the initial pressure value generated is also small, and due to the extension of time, after the water hammer wave propagates to the upstream, a reflected wave will be generated, so as to offset the pressure of the initial water hammer, so as to avoid the pipeline overpressure accident.

How to deal with the valve that is not tightly closed:

1) Reason: There are debris in the medium, and the solid particles are cushioned between the valve disc and the valve seat. The valve stem is not well connected with the disc, so that the disc and the valve seat are deflected and cannot be in close contact.

2) Treatment method: to ensure the cleanliness of the medium, if the valve disc is found to have a cushion plug phenomenon when closing the valve, do not close it hard, and use the method of quickly opening and closing several times to make the cushion plug flush out. Lubricate the stem and stem nut frequently to ensure that the valve opens and closes flexibly.

Reasons why the valve can't be opened and closed and how to deal with it:

i) Causes: There are debris or poor meshing between the stem and the stem nut, the valve stem is separated from the disc, the valve stem and the stem nut are corroded, the valve disc is stressed too much and the packing is pressed too tightly.

2) Treatment method: Lubricate the valve stem and valve stem nut frequently and remove debris; The valve stem is separated from the valve disc and should be disassembled and overhauled; When the disc is stressed too much, the valve is opened when the pressure is reduced.

The general valve can not be opened and closed quickly, but the quick shut-off valve can still be done.

It will cause the instantaneous pressure difference between the two sides of the valve to be too large, and in serious cases, it will cause cavitation and damage to the valve and pipeline.

There will be serious problems in the speed opening and closing, the pressure wave will be formed, which is normally called water hammer, and the pressure suddenly rises in a short time (seconds), which is multi-frequency, such as the pressure of the water pump, the pressure wave can reach more than 10MPa, which will damage the valve.

Why can't, you see your choice of valve and use, if you require fast opening and fast closing, the design is what you should explain, there are many valves that open and close quickly, and the guide rail valve is one of them, mainly depending on your use to select the valve!

To put it simply, the valve material cannot meet the requirements of the fast opening and closing conditions.

The general pipes above DN200 for large-diameter pipelines are electric gate valves or electric butterfly valves, and small-diameter pipes are electric globe valves, electric ball valves, etc.

Solenoid valves, ball valves, butterfly valves, and gate valves. The proportion of ball valves is relatively high.

It looks like it's off now, try twisting it to the left. Thanks for adopting!

It needs to be gently swung and twisted, and it cannot be twisted directly with force.

Generally, it is a torque switch, and there are also position switches. The switch is strung on the power line of the motor, and the switch is disconnected when the switch is closed, and the motor is powered off and stopped.

It's nothing, but I'm afraid that if I develop good habits, there won't be a big accident, and the gas danger should start from a little bit.

Turn off the gas every time you finish stir-frying, and it's good to make it a habit! Safety first!

It's a good habit to turn it off.

What if the trachea deteriorates.