What is the purpose of a check valve?

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66636ee728f7522a1c5186e7

What is the purpose of a check valve?

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🔍 Key Concepts

• Check valve function in a piping system • Difference between one-way flow and flow control/regulation • How air and liquid behave differently in valves and piping

💭 Think About

• Think about what engineers want to prevent when fluid should not be allowed to move backward in a system. • Which choice describes controlling the direction of flow, and which describe controlling the amount or rate of flow? • Do any of the options talk specifically about air versus liquid instead of direction of flow?

✅ Before You Answer

• Identify which option clearly refers to one-way flow rather than speed or volume of flow. • Eliminate any choices that focus on separating air from liquid instead of direction. • Ask yourself: in pump discharge lines and fuel lines, what is the main job of a check valve—direction, rate, or separation?

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Question 1 of 20

What is the purpose of a check valve?

Permits flow in one direction only

Regulates liquid flow

Passes liquid but not air

Passes air but not liquid

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