🔍 Key Concepts

• Positive displacement vs. centrifugal pumps for fuel oil service • Characteristics of viscous liquids (fuel oil) and the type of pump that handles them best • How steady pressure and flow are maintained to a boiler burner

💭 Think About

• Which pump type is best for pumping thicker (more viscous) fuel oils at relatively low flow but high and steady pressure? • Which of these pump types is most commonly found on fuel oil service to burners, often as a screw or gear pump? • Think about which pump type is normally used for clean fuels and lubrication systems, not for large volumes of seawater.

✅ Before You Answer

• Identify which options are positive displacement pumps and which are not • Ask: which pump type is most suitable for fuel oil service to burners on boilers, especially at lower flow but higher pressure? • Eliminate any pump types more typical for high-volume, low-pressure water circulation rather than fuel oil.