What are the functions of flanged butterfly valve?

Flanged butterfly valve is a kind of butterfly valve. It is the same as the flanged butterfly valve, which is another common connection method of butterfly valve and has a wide range of uses. The disc of flanged butterfly valves is a plate, swinging with valve shaft to turn on or off valves. Flanged butterfly valves are used for cutting off and throttling in pipelines. Flanged butterfly valves have large nominal diameter, whose body is made of carbon steel.

 

What are the functions of flanged butterfly valve?

What are the advantages and disadvantages of flanged butterfly valve?

What can flanged butterfly valve be used for?

 

What are the functions of flanged butterfly valve?

The flanged butterfly valve is mainly used in industrial production pipelines. The function of flanged butterfly valves is mainly to cut off the flow of the medium in the pipeline, or to adjust the size of the medium flow in the pipeline. Flanged butterfly valves are widely used in production pipelines in general industries such as water conservancy engineering, water treatment, petroleum, chemical, and urban heating. Flanged butterfly valves can also be used in condensers and cooling water systems of thermal power stations.

One of the functions of flanged butterfly valve is to retain a seal to protect against dual-directional pressure differential in the flow of fluid. In other words, the wafer version of flanged butterfly valves was designed to hold a tight seal, safeguarding against bi-directional pressure differential in order to avoid any backflow in systems that have been manufactured for uni-directional flow. This is accomplished by using a tightly fitted seal, such as an O-ring, gasket, precision machined, along with a flat valve face on the downstream and upstream sections of the flanged butterfly valve.

 

What are the advantages and disadvantages of flanged butterfly valve?

Flanged butterfly valve turns on or turns off conveniently and rapidly with less force. Flanged butterfly valve has less fluid resistance so that it can be operated frequently.

Flanged butterfly valve has simple structure, small size. Flanged butterfly valve has short face to face dimension, less volume and light weight, which is suitable for large diameter valves.

Flanged butterfly valve can be used for transmitting mud that less liquids are stored at apertures of pipe.

Sealing face of flanged butterfly valve is generally med of rubber or plastic. Under low pressure, flanged butterfly valves can realize good sealing.

Flanged butterfly valves have excellent regulation performance.

Throttling service of flanged butterfly valve is limited to low differential pressure.

Disc movement of flanged butterfly valve is affected by flow turbulence.

The flanged butterfly valve disc is always under pressure and can interrupt the flow even in an open position.

Possibility of cavitation and choked flow is a concern

Flanged butterfly valve has poor sealing function under high pressure and high temperature.

Flanged butterfly valve is not suitable for high differential pressure.

 

What can flanged butterfly valve be used for?

The flanged butterfly valve is particularly suitable for making large-diameter valves. Flanged butterfly valve is widely used in large-diameter adjustment fields. When the flanged butterfly valve is fully opened, the flow resistance is small. When the opening angle of the butterfly plate is about 15-70°, the flanged butterfly valve can control the medium flow very sensitively.

In addition, because the butterfly plate of the flanged butterfly valve has wiping properties when rotating, this type of butterfly valve can be used in pipelines with suspended particulate media. According to the strength of the seal, flanged butterfly valve can also be used for powder and granular media pipelines.

Flanged butterfly valves are used in a number of applications for industrial sectors that include food processing, pharmaceutical, chemical, oil, water as well as waste water management. Flanged butterfly valves for the most part have replaced ball valves in a lot of industries. This is especially the case for those dealing with petroleum because flanged butterfly valves are less expensive and easy to install. It's important to note that pipelines that contain flanged butterfly valves cannot be pigged for cleaning.

 

Learn more something about flanged butterfly valve can know the types of flanged butterfly valve and how to choose flanged butterfly valve. In the process of butterfly valve development, a number of very powerful companies have emerged, such as Tianjin Worlds Valve Co., Ltd. Our company knows how to innovate while developing, and will also go out in the process of introducing flanged butterfly valve.