Structure characteristics and performance advantages of middle line rubber lined butterfly valve

Structural characteristics

Main components: The main structure of the middle line rubber lined butterfly valve includes the valve body, the valve plate and the valve stem. Among them, a rubber lining is used between the valve plate and the valve body, which is a significant feature of its structure.

Sealing structure: The center line butterfly valve adopts the center line sealing structure, and the butterfly valve butterfly plate sealing center line is consistent with the valve body center line and the rotating center line of the valve stem. The upper and lower ends of the disc near the valve stem are designed as two smooth planes and are in close contact with the seat liner made of rubber to ensure that the medium does not leak from both ends. The outer edge of the butterfly plate is designed as a spherical outer edge, and the seat liner ensures that the sealing surface part has a suitable surface roughness when molded.

Design optimization:

The channel design is full diameter structure, which ensures the flow area of the valve and reduces the flow resistance when the fluid passes through the valve.

The disc flow line design can not only ensure the stress intensity of the center of the disc, but also ensure that the valve can obtain a larger flow coefficient and a smaller fluid resistance coefficient.

Shaft plate no pin connection, compact structure, flange connection, easy installation.

Performance advantage

Easy operation: The operation of the middle line rubber lined butterfly valve is very convenient, and the switch of the valve plate can be controlled and the flow can be adjusted by rotating the valve stem.

Excellent sealing performance: The sealing performance of the middle line rubber lined butterfly valve is very good, and its rubber lining is closely combined with the seat, which can effectively prevent the leakage of the medium. At the same time, when the valve is closed, the disc gradually compresses the rubber lining, causing it to produce elastic deformation, thus providing the necessary specific pressure for sealing.

Strong corrosion resistance: the rubber lining between the valve plate and the valve body can effectively prevent the corrosion of the medium to the valve body, so that the middle line rubber butterfly valve performs well in corrosive media such as chemical industry and petroleum.

Wide range of application: middle line lined rubber butterfly valve is suitable for a variety of pipeline systems, such as chemical, petroleum, electric power, light industry and other fields. At the same time, its good regulation and closure performance also makes it widely used in water supply, drainage and other systems.

Small flow resistance: The flow resistance of the middle line lined with rubber butterfly valve is small, which can effectively reduce energy consumption and the probability of pipeline blockage.

Good wear resistance: the disc and seat of the middle line rubber lined butterfly valve are made of wear-resistant materials, which can withstand greater friction and wear and extend the service life of the valve.

The center line rubber butterfly valve has been widely used in the field of fluid control because of its unique structure and superior performance.