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2022.08.08

Valve 16 asks, which one is difficult for you?

As one of the indispensable equipment in chemical and other industrial production, valves may encounter many problems from selection to use to maintenance. We have sorted out some common problem types and hope to help everyone.

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Valve 16 asks, which one is difficult for you?

2022.08.02

The uses and characteristics of various water treatment valves

It is the most commonly used opening and closing valve, which uses the gate plate (i.e. the opening and closing part, in the gate valve the opening and closing part is called the gate plate or gate, and the valve seat is called the gate plate seat or gate seat) to connect (fully open) And cut off (fully close) the medium in the pipeline. It is not allowed to be used as a throttling device. During use, you should avoid opening the gate a small amount, because the erosion of the high-speed flowing medium will accelerate the damage of the sealing surface. The gate moves up and down in a plane perpendicular to the center line of the gate seat channel, cutting off the medium in the pipeline like a gate, so it is called a gate valve.

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The uses and characteristics of various water treatment valves

2022.07.27

Why do steam pipelines need pressure reducing valves to reduce pressure?

When the steam is output from the boiler at high pressure and then transported to the steam point of each equipment, pressure reduction control is usually performed.

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Why do steam pipelines need pressure reducing valves to reduce pressure?

2022.07.27

Applications of butterfly valves and gate valves under different working conditions

Gate valves and butterfly valves both function as switches to regulate flow in pipelines. Of course, there are still methods in the selection process of butterfly valves and gate valves.

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Applications of butterfly valves and gate valves under different working conditions

2022.07.27

Solutions when the stability of the regulating valve is poor | Common troubleshooting of the regulating valve

1 ) Method of changing the action direction of the unbalanced force In the stability analysis, it is known that when the unbalanced force acts in the same direction as the valve closing direction, that is, when the valve has a closing tendency, the valve stability is poor. When the valve operates under the above-mentioned unbalanced force conditions, the method of changing its direction of action is usually changed from the flow-closed type to the flow-open type.

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Solutions when the stability of the regulating valve is poor | Common troubleshooting of the regulating valve

2021.08.13

How to install valve seal?

Sealing gaskets are frequently used sealing spare parts for machinery, equipment, etc., and are materials that play a sealing role. From this definition, it is not difficult for us to know how important the sealing gasket is, so how to install the sealing gasket is worthy of our attention. Correct installation can ensure sealing performance and ensure smooth operation of the equipment. Otherwise, it will damage the sealing gasket.

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How to install valve seal?

2021.07.06

Comprehensive pressure testing methods for various valves

Under normal circumstances, industrial valves do not undergo strength tests when in use, but the valve body and valve cover after repair or those damaged by corrosion should undergo strength tests. For safety valves, their set pressure, backseat pressure and other tests should comply with the instructions and relevant regulations. The strength and tightness test should be carried out before the valve is installed. 20% of low-pressure valves shall be randomly inspected. If they are unqualified, 99.99% shall be inspected; medium and high-pressure valves shall be inspected 99.99%. Commonly used media for valve pressure testing include water, oil, air, steam, nitrogen, etc. The pressure testing methods for various industrial valves including pneumatic valves are as follows:

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Comprehensive pressure testing methods for various valves

2021.06.26

How to choose the electric valve correctly?

In pipeline engineering, the correct selection of electric valves is one of the guarantee conditions for meeting usage requirements. If the electric valve used is selected improperly, it will not only affect the use, but also cause adverse consequences or serious losses. So, how do we use electric valves correctly? Let Xiaobei slowly explain to you:

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How to choose the electric valve correctly?

2021.04.20

What is the function of valve

Valves are generally divided into automatic valves and driven valves. Automatic valves (such as safety valves, pressure reducing valves, steam traps and check valves) rely on medium pressure changes in equipment or pipelines to achieve the purpose of opening and closing. The pressure, flow and direction of the medium in the pipeline are adjusted by driving the valve (gate valve, globe valve, ball valve, butterfly valve, etc.) through a driving device (manual, electric, hydraulic, pneumatic, etc.). Since the pressure, temperature, flow rate and physical and chemical properties of the medium are different, the control requirements and usage requirements for equipment and pipeline systems are also different, so the functions of valves are also different.

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What is the function of valve
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