• Wafer-Style Butterfly Valve

    Most wafer-style butterfly valves are engineered with four holes that align with the connected pipeline. The valve is designed to clamp between two flanges in your pipe work. Most wafer butterfly valves fit the majority of flange standards. Why is it called a butterfly valve? Butterfly valves a...
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  • Differences between valve materials 304, 304L, 316 and 316L

    Corrosion resistance The corrosion resistance of 316 stainless steel is better than 304 stainless steel, and it has good corrosion resistance in the process of pulp and paper production. Moreover, 316 stainless steel is also resistant to marine and corrosive industrial atmosphere. Generally speak...
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  • Common materials of valve stem

    The valve stem is not only a moving part, a stressed part, but also a sealing part in the process of valve opening and closing. At the same time, it is impacted and corroded by the medium, and has friction with the packing. Therefore, in the selection of stem material, it must be ensured that it...
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  • Flange gasket (2): non metallic flat gasket — PTFE packing gasket

    ① Introduction of gasket Polytetrafluoroethylene (PTFE) packing gasket is a kind of non-metallic composite cushion, which is generally composed of two parts: the cover and the insert. The main function of the envelope is anti-corrosion, which is usually made of polytetrafluoroethylene. The insert...
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  • Flange gasket (1)

    Structure type of gasket The flat gasket used in industry is generally composed of sealing element and inner and outer strong ring. The sealing element or gasket body is the key part to prevent leakage. The commonly used materials are non-metallic materials, such as flexible graphite, polytetrafl...
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  • Advantages and disadvantages of butterfly valve

    Advantage 1. It is convenient and quick to open and close, with low fluid resistance and easy operation. 2. Simple structure, small size, short structure length, small volume, light weight, suitable for large caliber valve. 3. It can transport mud and store the least liquid at the pipe mouth. 4. ...
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  • Butterfly valve working principle

    Butterfly valve is a kind of valve that uses disc type opening and closing parts to rotate about 90 ° to open, close or regulate medium flow. Butterfly valve is not only simple in structure, small in size, light in weight, low in material consumption, small in installation size, small in driving ...
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  • Introduction to gate valve

    Introduction to gate valve

    Gate valve Gate valves are primarily designed to start or stop flow, and when linear flow and minimum flow limits are required. In use, these valves are usually fully open or fully closed. After fully opening the disc of the gate valve, remove it. The disc is fully drawn...
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  • Valve guide

    Valve guide

    What is a valve? A valve is a mechanical device that controls flow and pressure in a system or process. They are the basic components of the pipeline system for conveying liquid, gas, steam, mud, etc. Provide different types of valves: gate valve, stop valve, plug valve,...
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  • Introduction to butterfly valve

    Introduction to butterfly valve

    butterfly valve Butterfly valve is a quarter turn rotary motion valve used to stop, regulate and start flow. Butterfly valves are easy to open. Turn the handle 90 ° to fully close or open the valve. Large butterfly valves are usually equipped with a so-called gearbox, wh...
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