In recent years, with the rapid development of the long pipeline, hard seal ball valve off the valve as an emergency one, the pace of development is very fast, mainly characterized by the development trend of the following areas:
Large-scale, high-parameter
Currently, Ball Valve has developed a large nominal pressure PN = 14.0MPa, DN = 1400mm, large-scale, high transport parameters will bring greater economic benefits.
High-strength corrosion-resistant materials
Valve size increases, the pressure increased, the urgent need to study the corrosion resistance of high strength of new training materials, to meet the increasing needs of the ball valve size.
Multi-seal structure
To ensure that the valve seal, working on a multi-sealing composite material structure to ensure that the valve in use long enough to have life, can reach 50 years of life.
High reliability and fast turn off
Emergency cut off valve in the gas pipeline in the open state for a long time, sometimes years is not action, but once the action, it must be accurate and reliable, ensuring greater reliability and less time can quickly turn off the .
Higher degree of automation
Emergency shut off ball valve that the perception of the accident, automatically shut down, sensing the distance longer.

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