1. The product has reasonable structure, reliable sealing, excellent performance, beautiful appearance, and convenient manufacturing and maintenance;

2. Small working stroke and short opening and closing time.

3. The sealing surface is welded with Stellite hard alloy, with good wear resistance, corrosion resistance, friction resistance and long service life;

4. The valve rod is quenched and tempered and its surface is nitrided, with good corrosion resistance and friction resistance;

5. Double sealing (including corrugated pipe design) can be adopted, and there is no fault in 10000 reciprocating tests, with more reliable performance to prevent leakage;

6. The rising and falling position indication of valve rod is more intuitive;

7. The part material, flange and butt welding end size can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.