Characteristics:
1. Multiple options for hard surface treatment
2. Targeted structural design
3. Protection function of elastic valve seat
4. Design of special medium scraping and sweeping
5. Design of dynamic load packing set
6. Design of reinforced packing ring assembly
7. Split seat design with patented technology, easy for maintenance and replacing
8. Ultra-precision machining of closing member
9. Hole sealing technology of coating
10. Stress treatment technology of hard surface coating
11. One-to-one valve design with simulated working conditions