1. The elastic seal design of the concentric butterfly valve gives it bi-directional zero leakage performance.

2. The valve body adopts a precision casting process, rubber lining avoiding contact with the fluid medium, and a combination of different rubber materials meets various working conditions.

3. The streamline design of the butterfly disk + polishing edge give lower operating torque and minimum pressure loss, ensuring a longer-termed zero-leakage seal and seat life.

4. The flexible design of full axis/half axis, pin/no pin meets the needs of different customers.

5. The valve seat design uses backlining and vulcanization structure according to different specifications to isolate the valve body and stem from the fluid, and provides a seal to the pipe flanges without additional seal gaskets.