Butterfly valve use occasions
Butterfly valves are widely used for flow regulation.Because the butterfly valve in the pipeline pressure loss, about three times the gate valve.Therefore, when selecting butterfly valve, the pipeline system should be fully considered by the pressure loss of the impact, should also be considered when closing the butterfly plate to bear the pressure of the pipeline medium robustness and high temperature elastic seat material can withstand the operating temperature limit.Butterfly valve structure length and the overall height is relatively small, open, close speed block, has good fluid control characteristics, its structure principle is most suitable for the production of large diameter valves.When the butterfly valve is required to control the flow of use, the most important is to choose the correct size and type of butterfly valve, so that it can work more effectively.
Generally, in the throttling, adjusting control and mud medium, the structure length is short, the speed of opening and closing is fast.Low pressure cut-off, butterfly valve is recommended.
in two position adjustment, the channel of the shrinkage, low noise, cavitation and gasification phenomenon, a small amount of leakage to the atmosphere, with corrosive media, butterfly valve can be selected.
When the butterfly valve is used under special working conditions such as strict throttling regulation or strict sealing requirements, or under working conditions such as severe wear and low temperature, it is necessary to use the special special butterfly valve with special designed metal seal and regulating device with triple or double eccentricity.
metal-to-metal sealing three-eccentric butterfly valve in addition to the use of large pressure swing adsorption gas separation device program control valve, but also widely used in petroleum, petrochemical, chemical, metallurgy, power and other fields, gate valve, globe valve is a good alternative products.
the middle line butterfly valve is suitable for the requirements of complete sealing, gas leakage is zero, high life requirements, operating temperature in -10-150 degrees of fresh water, sewage, seawater, salt water, steam, natural gas, food, medicine, oil and various acid and alkali and other pipelines.
metal to metal wire sealing double eccentric butterfly valve is suitable for urban heating, gas supply, water supply and gas, oil, acid and alkali and other pipelines, as a regulating and blocking device.
Soft eccentric butterfly valve is suitable for two-way opening and closing and adjustment of ventilation and dust removal pipeline, and is widely used in gas pipelines and waterways of metallurgy, light industry, electric power and petrochemical systems