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

2. The sealing surface is made of stainless steel and cemented carbide, which has a long service life;

3. Flexible graphite filler, reliable sealing, light and flexible operation;

4. Drive form: manual, electric, gear transmission;

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

6. It is widely used in petrochemical industry, thermal power plants and other oil products, water vapor pipelines as an opening and closing device for connecting or cutting off the medium in the pipeline.