Butterfly valves are used in many applications and are suited to flow regulation. Because the butterfly valve carries a large pressure loss while in the pipeline, it is three times that of the gate valve. Therefore, as soon as selecting a butterfly control device, the influence of the pressure lack of the piping system need to be fully considered.
Here would be the content list:
1. Pertinent occasion
2. What To think about
Butterfly valve is suitable for flow regulation. Because pressure loss of butterfly valve within the pipeline is relatively significant, it should also look at the solidity of butterfly menu under the pressure of pipeline medium when it's closed. In addition, consideration need to be given to the operating temperature limitations in the resilient seat material at high temperatures. Butterfly control device structure length and general height is small, available and close fast, along with has good fluid command characteristics, the structure principle involving butterfly valve is the best option for the production regarding large diameter valve. When the butterfly valve is required to control the flow people, the most important thing could be to choose the correct size and type of butterfly valve, so so it can work properly in addition to effectively.
Generally, short structure length and also fast opening and final speed (1/4 revolution) must be present in throttling, adjusting manipulate and mud medium. Lower pressure cut-off (small demand difference), butterfly valve is definitely recommended.
In the two-position regularions, shrinkage mouth of the particular passage, low noise, cavitation plus gasification phenomenon, a little bit of leakage into the feeling, with abrasive medium, you'll be able to choose butterfly valve.
Throttling adjusting under special working illnesses, or the requirements regarding strict sealing, or don serious, low temperature (cryogenic) working conditions when using butterfly valve, need to apply special design of metallic sealing belt adjustment gadget to triple eccentric and also double eccentric special butterfly control device.
Butterfly valve is suited to fresh water, sewage, seaside water, salt water, vapor, natural gas, food, remedies, oil, acid, alkali and also other pipelines with complete securing, zero gas test loss, high service life prerequisites and operating temperature of -10 ℃ ~ ONE HUNDRED FIFTY ℃.
Eccentric butterfly valve of soft seal works for bi-directional opening and also closing and regulating with ventilation and dust taking away pipelines. It is popular in gas pipelines as well as water channels of metallurgy, light industry, electric power plus petrochemical systems.
Double eccentric butterfly valve with metal to metal sealing works for city heating, energy supply, water supply and other gas, oil, acid as well as alkali pipelines, as an adjustment and throttling machine.
In addition to getting used as the program control valve of large PSA gas separation device, the three-eccentric butterfly valve is traditional in petroleum, petrochemical, compound industry, metallurgy, electric power as well as other fields, and is a great substitute for gate control device and globe valve
Things know about Consider
The robustness with the pressure of the blank disc medium under the closing as well as the limitation of the working temperature of the elastic valve seat content at high temperature might also want to be considered. The butterfly valve incorporates a small structural length and overall height. It opens and closes the speed block and has beneficial fluid control characteristics. Its structural principle is the best option for making large diameter valves. When a butterfly valve is necessary for control flow, the most crucial thing is to properly select the dimensions and type of butterfly valve to ensure he can work more efficiently.
Generally, in throttling, shift control, and mud media, the structural length is necessary to be short and the opening and closing pace is fast. For decreased pressure cut-off, butterfly valves are generally recommended.
1. In the actual double-position adjustment, shrinkage route, low noise, cavitation along with gasification phenomenon, a bit of leakage to the environment, with corrosive medium, butterfly valve could be selected.
2. In possible of special conditions, this throttling adjustment or your strict sealing, or the application of the butterfly valve under the conditions of serious wear and low temps, the special eccentric as well as double eccentric special butterfly valve of the special design metal sealing belt adjusting device is needed.
3. Metal-to-metal surface sealing That triple offset butterfly valve might be widely used in that fields of petroleum, petrochemical, inorganic, metallurgical, electric power, etc.,in addition to used as a large-scale strain swing adsorption gas separation device program control control device.
4. The centerline butterfly valve would work for fresh water, sewage, seawater, salt water, steam, natural fuel, food, medicine, oil along with each that require comprehensive sealing, zero gas seapage, high life expectancy and also working temperature of -10-150 degrees. Kinds of acid and alkali along with other pipelines.
5, metal-to-metal wire sealed dual eccentric butterfly valve would work for urban heating, energy supply, water supply as well as gas, oil, acid as well as alkali pipelines, as the regulating and intercepting device.
6. Soft eccentric butterfly valve works for two-way opening and also closing and regulation regarding ventilation and dust treatment pipelines. It is key in gas pipelines and also waterways of metallurgy, gentle industry, electric power plus petrochemical systems.