Performance of API flange butterfly valve

Advantages

Convenient and rapid opening and closing: only need to rotate 90 ° can be quickly opened and closed, simple operation, labor-saving, can be frequently operated.

Simple structure: composed of only a few parts, small size, light weight, small installation size, material consumption.

Small fluid resistance: when the butterfly valve is fully open, it has small flow resistance, and when it is opened between 15°-70°, it can carry out sensitive flow control, so it is very commonly used in the field of large-diameter adjustment.

Mud can be transported: the least amount of liquid is hosted at the mouth of the pipeline, which is suitable for pipeline systems that contain solid particles, mud and other media.

Good sealing under low pressure: under low-pressure conditions, it can realize good sealing and prevent the medium from leaking.

Working Principle

Butterfly valve’s disc is installed in the direction of the diameter of the pipeline, rotating around its own axis in the valve body, the rotation angle of 0 ° – 90 ° between. When the disc rotates to 90 °, the valve is in the fully open state, the medium can pass freely; when the disc rotates to 0 °, the valve is in the fully closed state, the medium is cut off. By controlling the rotation angle of the disc, it can realize the adjustment of medium flow.