🔍 Key Concepts

• How hose sizes are commonly specified in hydraulic and piping systems • Markings normally printed along the outer cover of a hydraulic hose • Difference between outside diameter, wall thickness, and nominal hose size

💭 Think About

• On an actual hydraulic hose in service, where would a mechanic look to identify its size and pressure rating? • Are hose sizes normally ordered and referenced by a measurement you take with a ruler, or by a standard marking placed by the manufacturer? • Which of these options would be the most practical and consistent method for identifying hose size in the field?

✅ Before You Answer

• Check what information is typically printed or stamped along the outer cover of hydraulic hoses (size, pressure rating, manufacturer, etc.) • Consider whether outside diameter or wall thickness is a reliable way to identify a standardized hose size without manufacturer data • Think about whether a color code system is universally used for hose size, or more often for other properties like service type or pressure range