If a centrifugal pump sealing line becomes...

Question 1 / 205eccef9bbacbc34ba4d454ca

Question 1 of 205eccef9bbacbc34ba4d454ca

If a centrifugal pump sealing line becomes restricted while operating under a negative suction head (suction lift), which of the following may occur?

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Question 1 of 20

5eccef9bbacbc34ba4d454ca

If a centrifugal pump sealing line becomes restricted while operating under a negative suction head (suction lift), which of the following may occur?

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🔍 Key Concepts

• Operation of a centrifugal pump under suction lift (negative suction head) • Purpose of the seal water / sealing line to the pump gland and its effect on cooling and air leakage • How loss of sealing water can affect suction, temperature at the gland, and cavitation risk

💭 Think About

• What happens to the stuffing box or mechanical seal if cooling and sealing water are reduced or cut off during operation? • Under suction lift conditions, how would air leakage at the gland affect the pump’s ability to maintain suction and NPSH (Net Positive Suction Head)? • Could more than one of the listed effects logically occur at the same time if the sealing line is restricted?

✅ Before You Answer

• Confirm the function of the sealing (gland) line: it both cools/lubricates and prevents air entry on suction lift systems. • Consider whether air entering through the gland under suction lift can cause loss of suction and promote cavitation. • Before choosing, ask yourself if only one, several, or all listed effects would reasonably follow from a restricted sealing line in real pump operation.

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Question 1 of 20

If a centrifugal pump sealing line becomes restricted while operating under a negative suction head (suction lift), which of the following may occur?

The pump may lose suction.

The pump gland may overheat.

Pump may tend to cavitate.

All of the above

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Question 1 / 205eccef9bbacbc34ba4d454ca

Question 1 of 205eccef9bbacbc34ba4d454ca

If a centrifugal pump sealing line becomes restricted while operating under a negative suction head (suction lift), which of the following may occur?

Back

Question 1 of 20

5eccef9bbacbc34ba4d454ca

If a centrifugal pump sealing line becomes restricted while operating under a negative suction head (suction lift), which of the following may occur?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed