Which symbol indicates the direction of fluid flow in hydraulic systems?

In hydraulic systems, the direction of fluid flow is typically indicated by arrow symbols. These arrows provide a clear visual representation of how the fluid moves through various components of the system, such as pipes, valves, and pumps. Correctly identifying the flow direction is crucial for understanding how the system operates and for troubleshooting any issues that may arise.

Solid lines are often used to represent paths of flow in a more generalized context but do not specify direction. Dashed lines usually indicate alternate routes or that a component is not a part of the main flow path. Phantom lines are typically used for showing hidden elements or outlines of objects and are not relevant to indicating fluid direction.

Overall, the use of arrow symbols allows engineers and technicians to easily follow the flow of fluids, improving system design and maintenance.