Influence of the valve-pull-down equipment on the area of high pressure peaks in long pipelines

The pipeline system is usually destroyed by the high internal pressure in the tubes due to development of water hammers. Also the possibility of continuous pressure oscillations causing vibration of external piping is dangerous, because it leads to loosening and destruction of the supports. One of the effective methods to protect a long pipeline is the possibility of removing liquid from the pipeline. The paper deals with the calculation of similar valve-pull-down unit by the numerical method of characteristics. © BEIESP.