This chokevalve, during cold engine starting, starts fuel to flow through the main system prematurely.
在冷启动时，阻风门使燃油提早进入主供油装置。
2
Due to the complication and variety in the hole especially the time that is needed to transmit pressure it is very inconvenient to use chokevalve to control standpipe pressure.
但井下情况复杂多变，尤其是压力传递需要时间，给调节节流阀控制立压带来不便。
3
The yield of a natural gas well in an oilfield dropped suddenly, which was due to the piston sheath of the chokevalve breaking into three parts with two pairs of fractures after inspection.