Butterfly valve has simple structure, small volume, light weight, and its components are relatively small. Only a few key parts can constitute a butterfly valve, and it is very convenient to open it. You only need to select the switch to 90 degrees. The control of the fluid is very good, and the flow can be increased or decreased at any time. The valve has a certain resistance when transporting any fluid, and the resistance of the butterfly valve mainly comes from itself, such as the thickness of the butterfly valve body. The resistance just needs to be reduced in its thickness.
Elastomeric seals have the disadvantage of being limited by temperature.
Butterfly valves have a wide range of applications. If they are used to control flow, you need to choose different types and valve body sizes, because butterfly valves are more suitable for valves with larger diameters when they are designed. Butterfly valves are not only widely used in general industries such as petroleum, gas, chemical, and water treatment, but also in cooling water systems in thermal power plants.