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What is flange expansion butterfly valve?
Flange Expansion Butterfly Valve, is a kind of butterfly valve that the structural length of the flange can be expanded and contracted within a certain range, this kind of valve is convenient for disassembling and assembling, but also can relieve the pipeline stress, and protect the valve and pipeline's normal flow.
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2023.08
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What is the difference between a globe valve and a gate valve?
The application range of globe valves and gate valves is determined by their characteristics. In the smaller channel, when the requirements of a good shut-off sealing, more use of globe valves; in the steam pipeline and large-diameter water pipeline, as the fluid resistance is generally required to be smaller, the use of gate valves.
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2023.08
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How to choose butterfly valve?
Butterfly valve, also known as flap valve, is a simple structure of the regulating valve, can be used for low-pressure pipeline media switching control of the butterfly valve is the closing member (valve flap or butterfly plate) for the disc, rotating around the valve axis to achieve the opening and closing of a kind of valve.
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2023.08
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The difference between a rising stem gate valve and no rising stem gate valve?
The gate valve has a small fluid resistance, applicable pressure, temperature range, etc., and is one of the most commonly used cut-off valves to cut off or connect the medium in the pipeline.
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2023.08
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Valve installation need to pay attention to the twenty-seven articles!
The importance of safe valves is beyond doubt, and how to correctly install the valve determines whether the valve can be used safely. Different valves, different use of the environment, the valve installation needs to pay attention to different content, the following is the valve installation needs to pay attention to the twenty-seven!
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2023.08
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Correct selection of valves is vital!
There are many types of valves, and each type of valve has its own advantages and roles. Selecting the incorrect valve may make control of a pipeline project difficult or even impossible, so it is vital to select the right valve.
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2023.08
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The water hammer hazard is so serious!
Water hammer is called water hammer due to the inertia of the pressurised water flow that produces a water flow shock wave, like a hammer blow, when there is a sudden power failure or when the valve is closed too quickly. The force generated by the back and forth of the water shock wave is sometimes so great that it destroys valves and pumps.
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2023.08
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How to install the valve gasket?
Sealing gasket is machinery, equipment and other frequently used sealing spare parts, is to play a sealing role of the material. From this definition, it is not difficult to know how important the gasket, so how to install the gasket is worth our attention. Correct installation to ensure sealing performance, so that the equipment runs smoothly, and vice versa will damage the gasket.
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2023.08
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Fight against valve corrosion a few great tips
Metal valves can be said to be the engineering equipment that is the most prone to corrosion failure of the key components of the structure. Usually, metal valve sealing surfaces, valve stems, diaphragms, small springs, and other valve parts are generally used in a class of materials, valve body, valve cover, such as the application of secondary or tertiary materials for high-pressure, highly toxic, flammable, explosive, radioactive media valves, the selection of corrosive materials is minimal.
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2023.08
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Sealing principle of the valve
There are many types of valves, but the basic role is the same, that is, to connect or cut off the medium flow. Therefore, the valve sealing problem is very prominent.To ensure that the valve can be a good cut-off medium flow, no leakage, we must ensure that the valve seal is intact.
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2023.07
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Which is better, forged steel valves or cast steel valves?
Forging steel refers to the use of the forging method and produces a variety of forging materials and forgings. The quality of forged steel parts is higher than cast steel parts, can withstand large impact force, plasticity, toughness, and other mechanical properties are higher than cast steel parts, so where some important machine parts should be used forged steel parts.
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2023.07
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Structural characteristics of flat gate valve
The slab gate valve is a sliding valve whose closing parts are parallel gates. The closing part can be a single ram or a double ram with a stretching mechanism in between. The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or the floating valve seat. If it is a flat gate valve with double gates, the expansion mechanism between the two gates can supplement this pressing force.
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2023.07
