1. Small and lightweight, easy to disassemble and maintain, and can be installed in any position.
2. The structure is simple and compact, and it can be opened and closed quickly by 90° rotation.
3. Small operating torque, labor-saving and lightweight.
4. The flow characteristics tend to be straight, and the adjustment performance is good.
5. The number of opening and closing tests is up to tens of thousands, and the service life is long.
6. To achieve complete sealing, the gas test leakage is zero.
7. Choose different parts and materials, and can be applied to a variety of media.
