1. Compact structure, reasonable design, good rigidity of valve, smooth passage and small flow resistance coefficient;

2. The sealing surface is made of stainless steel and hard alloy, with long service life;

3. Flexible graphite packing, reliable sealing, convenient and flexible operation;

4. Drive type: manual, electric, gear drive;

5. Structural type: elastic wedge single ram, rigid wedge single ram and double ram;

6. It is widely used in petrochemical industry, thermal power plant and other oil products, as well as in the steam pipeline to connect or cut off the medium in the pipeline.