If the valve "A" on the pump illustrated is...

Question 1 / 270705eccef9bbacbc34ba4d454af

Question 1 of 270705eccef9bbacbc34ba4d454af

If the valve "A" on the pump illustrated is closed, the __________. See illustration GS-0070.

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Question 1 of 27070

If the valve "A" on the pump illustrated is closed, the __________. See illustration GS-0070.

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

🔍 Key Concepts

• Stuffing box and packing around the pump shaft and what keeps it cool and lubricated • Role of the seal water/packing gland line controlled by valve "A" in a centrifugal pump • How air leaking in around the shaft can affect suction when the pump is lifting from below

💭 Think About

• Trace the small line from valve "A" and see exactly where it leads on the pump. What part is that feeding? • If no liquid flows through that line, what happens to the packing temperature, lubrication, and any air spaces around the shaft? • In a suction‑lift installation (pump above the liquid level), how would air entering through worn or dry packing affect the pump’s ability to maintain suction?

✅ Before You Answer

• Identify which component in the drawing is the stuffing box/packing and which is the shaft sleeve • Decide whether valve "A" being closed would stop cooling and lubricating flow to that area • Consider whether loss of this flow could both increase wear and allow air leakage that might break the suction when pumping from below

Question 1 of 27070

If the valve "A" on the pump illustrated is closed, the __________. See illustration GS-0070.

packing will tend to wear rapidly

pump may loose suction if the suction is from below the pump

shaft sleeve may become excessively worn

All of the above.

Question 1 / 270705eccef9bbacbc34ba4d454af

Question 1 of 270705eccef9bbacbc34ba4d454af

If the valve "A" on the pump illustrated is closed, the __________. See illustration GS-0070.

Back

Question 1 of 27070

If the valve "A" on the pump illustrated is closed, the __________. See illustration GS-0070.

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