If you want to go for the best butterfly valve to suit your needs, you are on the right page. These units are designed to withstand different levels of pressure and temperature. Therefore, we suggest that you understand your application to choose one that can meet your needs. Let’s know the difference between high performance butterfly valves and general service ones.
General service units
These units are designed for general processes involving water, steam, air, and other gases or fluids that are chemically inactive. These units typically feature a 10-piston handle for easy opening and closing. Also, you can use an electric or air actuator to open and close them.
The valve seat covers the body to ensure that the material does not touch the body. In addition, the seat design is ideal for the unit to function in vacuum applications. The valve shaft passes through the disc and joins the disc through a tight spline. There are 3 bushings on the bottom and top that serve as the shaft bearing.
The main benefit of these units is that they are designed in a simple way. Therefore, they are tailor-made to meet different piping applications. Apart from this, they are sealed with elastomer.
High performance drives
High performance butterfly valves can handle everything that general service units can do. However, they can withstand many gases and liquids, unlike the other type. In addition, they are made with high quality PTFE seats to resist corrosive and chemically reactive materials.
On the other hand, general purpose units are made with elastomers, which are prone to erosion. High performance ones use graphite to seal the seat. You can find them in sizes as large as 60. Therefore, you can use them for a wide range of applications.
Regardless of the type of material you need to process, you can find a unit that can meet your needs. Also, if your projects may have fugitive emissions, we suggest that you choose a unit that comes with stem seal extensions to control emissions.
You can choose a high performance steel or stainless steel butterfly valve. Typically, metals are welded to allow the valve to tolerate extreme temperatures and pressures. Most of these units have a stop or valve that prevents overtravel.
Choose the best
For power generation plants as power units, high-performance butterfly valves are an ideal choice. In addition, they are the safest devices for use in oil refineries and chemical processing units that use reactive chemicals. Additionally, water treatment plants must use these units to cope with high levels of water pressure.
Simply put, if you are purchasing a butterfly valve, we suggest that you make this choice after having considered the difference between general purpose and high performance butterfly valves. I hope this article makes it easy for you to choose the best unit.