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1. Using the bi-eccentric structure and more closed more tightly, reliable sealing performance.

2. Using stainless steel and oil resistance Buna-N rubber match as the vice Sealing material, being durable.

3. Rubber seals can be located on the valve body or butterfly board, and applicable to different characteristics of the media, for the user to choose.

4. Butterfly plate with frame structure, high strength, large flow area, flow resistance.

5. The overall paint can effectively prevent corrosion. And just replace the seal material can be used in different media.

6. Having the function of two-way sealing. Installing could be in any direction, not be controlled by media flow and air position.

7. Unique structure, flexible operation, labor-saving and convenient.

(1)Clean cavity and the sealing surface; dirt adhesion is not allowed.

(2)Check whether the conjunction of the thread is evenly tightened.

(3)Check whether the packing is compressed in order to keep the seal of the packing.

(4)Check whether the switch button and the porous socket of the electric device are in normal condition when installing the electric valve

(5)Check whether the electrical devices function well.