1. It is small and light, easy to disassemble and maintain, and can be installed in any position.

2, simple structure, compact, 90° operation fast opening and closing.

3. Small operating torque, light and labor-saving.

4. Completely sealed, zero leakage in gas test.

5, choose different parts and materials, can be used for a variety of media.

6. Flow characteristics tend to be straight line with good regulation performance.

7. As many as tens of thousands of opening and closing tests, with a long life.