Set Up Three-piece Ball Valves According To The Starting And Ending Points Of The Pipeline

We all know that when overhead pipelines are installed on the ground, the center line of the pipeline must be determined first. In addition, the center line, elevation, verticality, and matching degree of the three-piece stainless steel ball valve of the pipe rack foundation and the pipeline support must be determined.

This measurement procedure is to first determine the pipeline. After the pipeline is positioned and checked to meet the standards, the three-piece ball valve can be set according to the starting and ending points of the pipeline and each turning point. The center line of the pipeline is sprinkled with white lime, and then the center pile of the pipe rack foundation is measured and set according to the center line of the pipeline and the spacing between the pipe racks. Generally, the straight line projection tolerance of the center pile of the pipe rack foundation is ±15mm, and the tolerance of the foundation spacing measurement is 1/2000.

After the center pile of the pipe rack foundation is determined, 3 Piece Ball Valve uses the cross line method or the parallel baseline method for control, that is, 4 positioning piles are driven along the center line and the vertical direction of the center line at the position of the center pile, or an axis parallel to the center line is measured on one side of the center pile of the foundation. Use these two methods to control the pipe rack foundation. The control pile of the pipe rack foundation is measured based on the center pile, and its measurement tolerance is ±3mm. This reduces the deviation of the installation position and enables it to work normally.