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  • Advantages of stop valve

    The opening and closing parts of the stop valve are plug-shaped disc, the sealing surface is flat or conical, and the disc moves in a straight line along the center line of the fluid. The movement form of the valve rod includes the lifting rod type (the valve rod is lifted and the handwheel is no...
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  • Operating Principle and Advantages and Disadvantages of Butterfly Valve

    Operating Principle and Advantages and Disadvantages of Butterfly Valve

    The butterfly valve opening and closing piece is a disc-shaped butterfly plate, which rotates around its own axis in the body of the valve, thus achieving the opening and closing or regulating of the valve is called the butterfly valve. Butterfly valves are usually less than 90 degrees open and c...
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  • What is the function of globe valve?

    What is the function of globe valve?

    Globe valves are used to cut off the flow of media. Globe valves are suitable for occasions requiring frequent opening. They are most commonly used in chemical production.   The sealing parts of globe valves are discs and seats. In order to close the globe valves tightly, the mating surfaces of t...
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  • The Function and Characteristics of Check Valve

    Check valve is a kind of valve that automatically opens and closes by the force of medium itself. Check valves are mainly used to prevent backflow of media. Once the water flows backwards, the check valve closes. Check valves are generally divided into lifting check valves and swing check valves....
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  • Working Principle and Characteristic of Check Valve

    Working Principle and Characteristic of Check Valve

    When choosing and using check valve products, it is necessary to have a clear understanding of the principle of the check valve in order to select the appropriate check valve and extend its service life. The working principle of the check valve is as follows: the check valve allows fluid to flow ...
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  • Comprehensive explanation and definition knowledge of gate valves

    1.Definition of gate valve It is a kind of valve which is widely used in pipeline. It mainly plays the role of connecting and cutting off the medium. It is not suitable for regulating the flow rate of medium, but it can judge the flow rate according to the rise and fall of the stem (e.g. fire-fig...
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  • Advantages and Working Principle of Stainless Steel Ball Valve

    Advantages of stainless steel ball valves: 1. Easy to operate, quick to open and close, from full-open to full-close as long as the rotation of 90 degrees, easy to control over long distances. 2. It has simple structure, small volume and light weight. 3. It can be used in a wide range of applicat...
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  • Working Principle of Self-operated Regulating Valve

    Many people wonder what is a self-regulating valve. In fact, the self-regulating valve relies on the pressure of the medium flowing through the valve itself, and the temperature acts as the energy source. The valve operates automatically without external power supply and secondary instrument. So ...
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  • Pressure Test Method for Industrial Valves

    Pressure Test Method for Industrial Valves

    Pressure Test Method for Various Industrial Valves Normally, industrial valves are not tested for strength in use, but after repair, body and bonnet or corrosion damaged body and bonnet should be tested for strength. For safety valves, their constant pressure and return pressure and other tests s...
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  • Introduction of Valve Parts and Valve Fittings

    Introduction of Valve Parts and Valve Fittings

    What are the parts and accessories of the valve? Valves are mechanical devices for controlling flow and pressure in systems or processes. They are an important part of the pipeline system for transporting liquid, gas, steam, slurry and so on. Valves: gate valves, ball valves, ball valves, butterf...
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  • Selection Principle of Globe Valve

    Selection Principle of Globe Valve

    1. Cut-off valves are suitable for pipes or devices with high temperature and high pressure media. Such as thermal power plants, nuclear power plants, high temperature and high pressure pipelines of petrochemical systems. 2. Globe valves are used in pipelines where convection resistance is not st...
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  • Valve Selection Basis and Guidelines I

    Valve Selection Basis and Guidelines I

    Nowadays, there are more and more valves on the market. The types of valves are particularly complex, and the structure and material are also different. The selection of valves is very important for the long-term operation of the device in working conditions. The improper selection of valves and ...
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  • Installation and Maintenance of Ball Valve

    Installation and Maintenance of Ball Valve

    Ball Valve Installation:  1. It must be confirmed that the pipes and valves have been cleaned before operation.  2. The actuator operation of the valve drives the stem to rotate according to the size of the input signal. When the valve rotates 1/4 times (900) in the forward direction, the valve c...
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  • Common Valve Knowledge II

    Common Valve Knowledge II

    1、Three-way valve The three-way valve body has three nozzles, which are suitable for pipeline control system of three-direction fluid. Most of them are used for temperature regulation, ratio regulation and bypass regulation of heat exchange. In use, we should pay attention to the fluid temperatu...
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  • Common Valve Knowledge I

    Common Valve Knowledge I

    一 Butterfly valve The disc of butterfly valve is a disc, which rotates around an axis in the seat. The angle of rotation is the opening and closing degree of the valve. Its advantages are lightweight, simple structure, material saving compared with other valves, quick opening and closing, cuttin...
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  • Check Valve How To Save Energy?

    Check Valve How To Save Energy?

    Check valve is to rely on the strength of the fluid itself automatically open and close the valve, its role is to prevent the media back. Its name a lot, such as check valves, check valves, single-flow doors. According to the structure can be divided into two categories. (1) Lift: valve body to m...
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