hydraulic cylinder for open-closed flap grate water of dam.

architecture art background boat bridge building canal cement civil construction cylinder dam engineering equipment europe flap flood floodgate flow flowing garonne gate gateway grate haute hydraulic industrial industry iron landscape machine mast mechanical mechanics mechanism metal michel midi nature open-closed outdoor outdoors painting park pyrénées reflection repair river saint sea ship shiplock sluice sluicegate stagnant steel stone technology tide toulouse track transport travel valve vehicle wall washington water watercraft waterway weir wood