Description:

Washover valve is flushing tool,is special tool for inversal well flushing is installed below of the well pump, flushing fluid injected from annuli and through the little hole on base pipe get into flushing deveice the one-way valve is closed,flushing fluid will up-reback from centrol tube,and enter into well pump and oil tube and back to ground.realize the cleaning of column,During flushing process,when pump pressure is over a certain value,pin is cut,clack seat down,pressure off through pin hole realize the protective action,could demo its operating principle nd structural composition and carryon dismounting training and coordinate according to standard.

Details: