Structure of pneumatic butterfly valve
The pneumatic butterfly valve has small structure length and overall height, fast opening and closing speed, and good fluid control characteristics. The structural principle of pneumatic butterfly valve is a large diameter valve. When the butterfly valve is required to control the flow, it is important to correctly select the size and type of the butterfly valve, so that the butterfly valve can work correctly and effectively. Generally, in throttling, regulating control and mud medium, the structure length is required to be short and the opening and closing speed is fast.
Low pressure cut-off (small pressure difference), pneumatic butterfly valve is recommended. The butterfly valve can be used in case of two position adjustment, narrow channel, low noise, cavitation and vaporization, a small amount of leakage into the atmosphere and grinding media. When the butterfly valve is used under special conditions such as throttle valve regulation, strict sealing, severe wear, and low temperature (low temperature), it is necessary for the triple eccentric or double eccentric butterfly valve to have a specially designed metal seal with a regulating device.
Dongfeng pneumatic butterfly valve is applicable to fresh water, sewage, sea water, brine, steam, natural gas, food, oil and 150 ℃ acid and alkali pipelines for various products that need sealing, zero gas test for leakage, high life requirements and operating temperature of - 10 ℃~. The soft sealing eccentric butterfly valve is applicable to the two-way opening and closing and adjustment of the ventilation pipeline and dust removal pipeline, and is widely used in the gas transmission pipeline and water circuit of metallurgy, light industry, electric power, petrochemical system.
