🔍 Key Concepts

• Hydraulic pump symbols in schematics show whether the pump is fixed/constant displacement and whether its construction (gear, screw, vane, etc.) is specified. • Look closely at the shape inside the pump circle (near the motor "M") and note whether it shows gears, screws, or just a simple triangle indicating flow direction. • A bi-directional pump symbol is drawn differently from a normal fixed-displacement pump; compare how many arrows/triangles are shown and which way they point.

💭 Think About

• Does the symbol near the motor show any details that clearly identify a gear or screw mechanism, or is it a more generic pump symbol? • How would the symbol look different if the pump could send flow effectively in both directions (bi-directional) compared with a standard fixed-direction pump? • In ISO hydraulic symbols, what does a single solid triangle inside a circle usually mean about flow direction and pump type detail?

✅ Before You Answer

• Verify whether the symbol has only one triangle/arrow or more than one, and which way it points. • Check if there are internal outlines (gears/screws) inside the pump symbol; if none are drawn, consider what that implies about the pump’s construction. • Confirm from a symbol chart whether the pump is shown as fixed-displacement/constant flow but with its exact mechanical type left unspecified.