Compared with butterfly valve
s, globe valves have better regulation performance, but butterfly valves have poor regulation performance, and are generally used in occasions where only switches are required. On the other hand, globe valves are more expensive than butterfly valves. Butterfly valve: Butterfly valve, also called flap valve, is a kind of regulating valve with simple structure. Because the butterfly valve should not be closely matched with the pipe wall, it is only suitable for adjusting the flow, and cannot be used to cut off the pipeline. It is often used to adjust the flow on the pipeline for conveying air and flue gas. The butterfly valve is a valve that uses a circular disc that rotates with the valve stem as the opening and closing part to realize the opening and closing action. The butterfly valve is mainly used as a shut-off valve, and it can also be designed to have the function of regulating or shut-off and regulating. At present, butterfly valves are used more and more in low-pressure large and medium-diameter pipelines. Globe valve: Compared with gate valve, it has simple structure, convenient manufacture and maintenance, and good adjustment performance. It is widely used in the transportation pipeline of various media. However, when the fluid passes through the shut-off valve, the direction changes, so the resistance is large, and it is not suitable for pipelines with high viscosity, suspended substances and easy-to-crystallize materials, nor for venting valves and low-vacuum system valves. Globe valves are widely used in various pressurized fluid pipelines, and are also commonly used in steam and compressed air pipelines. Globe valve is a commonly used shut-off valve, which is mainly used to connect or cut off the medium in the pipeline, and is generally not used to adjust the flow. Globe valves are suitable for a wide range of pressure and temperature, but are generally used for medium and small diameter pipes.
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