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2020.04.15

These tips are enough to deal with valve corrosion. .

The corrosion of metals is mainly caused by chemical corrosion and electrochemical corrosion. The corrosion of non-metallic materials is generally damage caused by direct chemical and physical effects.

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These tips are enough to deal with valve corrosion. .

2020.04.02

Principle of pneumatic gate valve Working principle of pneumatic gate valve

The pneumatic gate valve is equipped with a pneumatic actuator and driven by compressed air to control the gate valve . The valve core is composed of a wedge-shaped parallel structure and is suitable for emergency cutting and discharge of gas and liquid transportation pipelines.

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Principle of pneumatic gate valve Working principle of pneumatic gate valve

2020.04.02

How butterfly valve works

The butterfly valve is a valve that opens and closes by rotating the valve stem while driving the disc to rotate. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, mainly rotating the disc 90° for flow control. , when the disc reaches 90°, the valve is in a fully open state. At the same time, the angle of the disc can be changed to adjust the medium flow. It is generally installed in the diameter direction of the pipe. The butterfly valve and the valve stem themselves have no locking ability. In order to effectively adjust the flow rate, a worm gear reducer is required. A butterfly valve equipped with a worm gear reducer not only makes the butterfly valve self-locking, but also changes the operating performance of the butterfly valve and regulates the medium flow rate more accurately. .

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2020.03.24

Conversion of pounds to kilograms, conversion of kilograms to pounds in valves

The kilogram ( kg, also known as the kilogram) is the legal unit of measurement for measuring mass in the International System of Units. The pound (lb) is the imperial mass unit used in the United Kingdom and the United States. They are both used as codes for weight measurement. So, how many kilograms is equal to 1 pound? 1 pound equals how many kilograms?

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Conversion of pounds to kilograms, conversion of kilograms to pounds in valves

2020.03.18

Types and classifications of gate valves

Gate valve, also called gate valve, is mainly composed of valve body, valve cover, gate plate, valve stem, valve seat and sealing packing. It is one of the most common valve types among isolation valves. The main purpose of a gate valve is to intercept fluid, and it is for this reason that it is often called a "block" valve or a "blocking" valve. Gate valves come in many different structural forms, and they use different structural types of sealing elements. According to the structure of the sealing element, it can be divided into several different types.

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Types and classifications of gate valves

2020.02.27

Principles for selecting valves in the petroleum and chemical industries

Faced with so many valve classifications and such complex various working conditions, to choose the most suitable valve product for pipeline system installation, you should first understand the characteristics of the valve; secondly, you should master the steps and basis for selecting the valve; thirdly, you should follow the selection of oil , Principles of valves used in the chemical industry. Principles for selecting valves in the petroleum and chemical industries: valves with straight-through flow channels have small flow resistance and are usually selected as valves for shut-off and opening media; valves that are easy to adjust the flow are used for flow control; plug valves and ball valves are more suitable It is used for reversing and diverting flow; the closing member slides along the sealing surface and has a wiping effect. It is most suitable for media with suspended particles.

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Principles for selecting valves in the petroleum and chemical industries

2020.02.20

Ball valve installation and maintenance

Ball valve installation: Make sure that pipes and valves have been cleaned before operation. The actuator operation of the valve drives the valve stem to rotate based on the size of the input signal: when it rotates 1/4 turn (900) in the forward direction, the valve is closed. When rotated 1/4 turn (900) in the opposite direction, the valve opens. When the actuator direction indicator arrow is parallel to the pipeline, the valve is open; when the arrow is perpendicular to the pipeline, the valve is closed.

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2020.01.14

Working principle of self-operated regulating valve

Self-operated regulating valve, also called self-operated control valve, is a new type of regulating valve. As the name suggests, it does not require external power supply and secondary instruments. It relies on the pressure and temperature of the medium flowing through the valve as energy to drive the valve to work automatically. The feedback signal (pressure, pressure difference, temperature) at the output end of the valve is transmitted to the actuator through the signal tube, which drives the valve disc to change the opening of the valve to achieve the purpose of regulating pressure, flow, and temperature.

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Working principle of self-operated regulating valve

2019.12.25

DC24V electric butterfly valve wiring diagram description and control method

Electric butterfly valve is an actuating device that uses electric energy as the driving force to drive the valve. With its advantages of small size, light weight, reliable performance, and simple matching, it is widely used in industrial systems such as food, environmental protection, light industry, petroleum, and chemical industry. , often used for cutting off pipeline systems. In recent years, it has also been used for regulation. By receiving the 4~20mA signal from the industrial automation control system, it can accurately control the valve opening to achieve different flow, temperature, pressure, etc. Adjustment and control of process parameters.

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DC24V electric butterfly valve wiring diagram description and control method

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