Which of the following is the schematic symbol for a filter-strainer?

The schematic symbol for a filter-strainer is represented by a triangle with a dashed line. This symbol is utilized in hydraulic schematics to indicate a device that serves to remove impurities from the fluid, ensuring the system operates effectively and preventing damage to other components.

Filters and strainers play a crucial role in maintaining fluid cleanliness, which is essential for the integrity and lifespan of hydraulic systems. The representation of a filter-strainer as a triangle with dashed lines helps designers and technicians quickly identify this component within hydraulic circuits, facilitating efficient troubleshooting and maintenance.

The other symbols do not correspond to filters or strainers. Circles, squares, and diamond shapes are often reserved for other hydraulic components like pumps or valves. Understanding these symbols helps anyone working with hydraulic systems to accurately interpret schematic diagrams.