🔍 Key Concepts

• Location and purpose of fuel oil strainers in relation to burners • Differences between simplex, duplex, and self-cleaning strainers • Why reliability and ability to service the strainer without shutting down the system matters near the burner manifold

💭 Think About

• Think about what happens if the strainer clogs while the burner is firing. Which type would let you keep operating while you deal with the clog? • Consider which type of strainer arrangement is most commonly used where continuous flow of clean fuel is critical for safe combustion. • Ask yourself which option is more of a special-purpose design (like removing metallic particles) rather than a standard fuel line arrangement.

✅ Before You Answer

• Identify which strainer type allows changing or cleaning elements without interrupting fuel flow. • Eliminate any type that would normally be placed at the fuel tank outlet rather than right before the burner manifold. • Consider which type is standard for continuous duty fuel oil service to boilers and burners in marine practice.