Did your butterfly valve manufacturers in Singapore suggest that you can use butterfly valve as control valve, and you are wondering if it is true? To decide on this, you need to have a clear picture of these valves. Both valves are used to control the flow and are commonly used in different types of applications. However, there are differences. Let us take a closer look at the two types of valves.
Butterfly Valves
Butterfly valves are the best when you need more durability and better sealing. It is more an economical alternative to other types of control and globe valves. The 90-degree low torque rotation and the disk makes it easy to operate a butterfly valve. There are different types of butterfly valves, and the choice will be based on the process condition you will be using it. For not so extreme temperature and pressure, you use a resilient seat butterfly valve. High-performance butterfly valves, like triple offset butterfly valves, will be the right choice for process conditions with extreme temperature and pressure.
Triple offset butterfly valves can handle low and high temperatures, high-pressure levels and do not erode. It is used with high-risk hazardous applications like petroleum processing and energy generation, where a leak can spell disaster to life and the environment.
Control Valves
Control valves are also called control nozzles. It is used for a wide range of applications across different industries to control material flow. The control is based on the inputs provided by the controller. Control valves are also used to change the passageway's width through which gases and fluids are processed. Control valves will effectively control the number of materials and the pressure levels.
The ability of butterfly valves to be used as control valves is a highly debated topic across all industrial forums. Some say it is fine to interchange and others refute this idea. A few sections of people believe the butterfly valves cannot deliver what control valves can. While we know that butterfly valves are used for gas and oil applications where pressure and flow have to be monitored accurately, they may or may not be appropriate for situations requiring control valves. A senior engineer for valves in Singapore responds that you must always weigh the process conditions and the expectations set forth for the valve against its capabilities.
Also Read : How To Choose A Butterfly Valves
One major factor that works in favour of control valves is that it has a linear flow characteristic. The design of butterfly valves does not allow for linear flow. The shape of the disc and the way it is attached to the pipe make it a little tough to make the flow linear. You need to add a positioner and instrumentation to the valve for more precise control. So, if you have an application that does not require precise control and an ideal process condition, you can use butterfly valves instead of control valves. Applications like food flavours and mixing paints require precise control, and hence butterfly valves are not the right choice.
When the conditions are favourable, choosing a butterfly valve over any other valves to offer several benefits -
At OilValve, the leading industrial valve suppliers in Singapore, we ensure 100% commitment to following all manufacturing processes to deliver quality valves that meet your expectations. To learn more about our products, contact us today.
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