In simple terms, a valve refers to any apparatus that can regulate the flow of fluids. It does so by opening, closing, or fractionally obstructing passageways. It has several applications in commercial, residential, military, and industrial projects. One of the types of the valve is butterfly valves. It is used in large pipes and is like a disk rotating on a diametrical axis inside it. It can be used as a throttle valve or dampener.
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Working of the butterfly valve
The butterfly valve has a flat circular plate and is positioned in the center of the pipe. The plate has a rod through it that is attached to a handle on the outside of the valve. This valve works by rotating the handle and turning the plate over either in a parallel position or perpendicular to the flow. Through this kind of pressure, a drop is always imposed on the fluid.
Types of the butterfly valve
There are three main types of butterfly valve:
- The high-performance butterfly valve- It is generally double eccentric in design and works the pressure for up to 725 PSI.
- Resilient butterfly valve- It has a flexible rubber seat. This type would work the pressure for up to 232 PSI.
- pericentric butterfly valve-which is normally designed with metal seating. This valve works the pressure for up to 1450 PSI.
Advantages of butterfly valves
Butterfly valves are quick and easy to operate. They do not have much maintenance and are easy to install. They are very compact and lightweight. They do not require too much space for installation. They are most convenient to use and are cost-effective as well. Butterfly valves are equipped with a gearbox where the headwheel by gears is connected to the stem. This simplifies the operation of the valve. Their reduced level of wear extends the lifespan of the valve, making it more reliable. This reduces the operation costs and lowers maintenance costs.
Applications of butterfly valves
Butterfly valves are used for cooling purposes by a variety of devices. They are also used by slurry and similar services. Vacuum services also use them. High pressure and high-temperature water services also use them. Butterfly valves are used in a wide range of industries, including food and beverages, dry bulk handling, and in oil and gas drilling and production. The butterfly valve is used to interrupt the flow (solid, liquid, gas) within the process in pharmaceuticals, chemicals, and the food industry.