What are the types of flanged butterfly valve?

The butterfly plate of the flanged butterfly valve is installed in the diameter direction of the pipeline. The flanged butterfly valve is simple in structure, small in size and light in weight. Flanged butterfly valve consists of only a few parts, and it can be opened and closed quickly by rotating 90°. At the same time, the flanged butterfly valve has good fluid control characteristics. When the flanged butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small.

 

What are the characteristics of flanged butterfly valve?

What are the types of flanged butterfly valve?

How to choose flanged butterfly valve?

 

What are the characteristics of flanged butterfly valve?

Flanged butterfly valve has bidirectional sealing without flow direction of the medium.

Flanged butterfly valve body vulcanized EPDM, which is reliable sealing.

Flanged butterfly valve has a dial with an opening indication showing the position of the disc switch.

Flanged butterfly valve has flow characteristics straight line, but good regulation performance.

Flanged butterfly valve is small and light, which is easy to disassemble and repair.

Flanged butterfly valve can be installed in any position.

The structure of flanged butterfly valve is simple and compact, whose operating torque is small.

The connection between the butterfly plate and the flanged butterfly valve stem adopts a pin-less structure, which overcomes possible internal leakage points.

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.

 

What are the types of flanged butterfly valve?

The driving mode of the flanged butterfly valve can be manual, worm gear, pneumatic and electric. The connection mode of flanged butterfly valve can be flange and butt clamp. The structure of flanged butterfly valve can be single eccentric, center line, double eccentric and triple eccentric. The sealing structure of flanged butterfly valve can be soft seal and hard sealed.

Double flanged butterfly valve has a flanged body and raised rims to allow its installation between two flanged pipes with the same dimension as the valve. This type of butterfly valve is used for heavy applications where its strength and rigidity can be benefited. Double flanged butterfly valves are used for controlling, regulating and throttling flow. Double flanged butterfly valve is considered as one of the most resilient seated valve designed for dead-end service. You can use this type of valve as shut-off device because of its installed gear box which functions to control the disc in varying positions.

 

How to choose flanged butterfly valve?

If the flanged butterfly valve is required to be used as flow control, the main thing is to correctly select the size and type of the flanged butterfly valve. The structure principle of flanged butterfly valve is especially suitable for making large-diameter valves. Commonly used butterfly valves include wafer type butterfly valves and flanged type butterfly valves. Wafer butterfly valves are used to connect the valve between two pipe flanges with stud bolts. Flanged butterfly valves are equipped with flanges on the valve that the flanges on both ends of the valve are connected to the pipe flanges with bolts.

An existing relatively advanced flanged butterfly valve is a triple eccentric metal hard-sealed flanged butterfly valve. The valve body and the valve seat are connected components, and the sealing surface layer of the valve seat is welded with temperature-resistant and corrosion-resistant alloy materials. The multi-layer soft stacked sealing ring is fixed on the valve plate. Compared with the traditional butterfly valve, this flanged butterfly valve has high temperature resistance, which is easy to operate, and has no friction when opening and closing. When closing, the torque of the transmission mechanism increases to compensate for the sealing, which improves the flanged butterfly valve.

 

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. Whether from quality or price, or delivery time, we can help customers to open up a further and larger market, it is wise to choose us as your business partner.