If a leak occurs between the areas labeled...

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Question 1 of 205eccefa5bacbc34ba4d487f1

If a leak occurs between the areas labeled "B" and "J" of the control valve shown in the illustration, which of the following problems is most likely to occur? See illustration GS-0043.

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Question 1 of 20

5eccefa5bacbc34ba4d487f1

If a leak occurs between the areas labeled "B" and "J" of the control valve shown in the illustration, which of the following problems is most likely to occur? See illustration GS-0043.

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🔍 Key Concepts

• Study how the thermal bulb and capillary (J) act on the bellows/spring assembly around B to move the valve stem. • Determine whether an increase in bulb temperature tends to compress or expand the element at B, and which way that moves the main valve plug (toward open or closed). • Think about how the valve is intended to act in normal operation for a heating service versus a cooling service (does it fail open or fail closed?).

💭 Think About

• First, trace the mechanical link from the thermal bulb at J through the capillary to the bellows/spring region at B and then down to the main valve seat at G. When pressure is lost between B and J, what happens to the force on the bellows? • Ask yourself: if the system loses its temperature‑sensing fluid between B and J, will the spring at A/B be more free to extend or compress? Which direction will that drive the valve plug relative to the seat? • Once you know the fail position (valve tends to stay open or closed when there is a leak), match that behavior to which of the four statements describes that failure during heating vs cooling.

✅ Before You Answer

• Be clear on which way is valve open vs valve closed by looking at the plug at G and the flow path from inlet L to outlet I. • Confirm whether the spring at A/B is trying to push the valve open or closed when the sensing pressure at B is lost. • Match the identified fail‑safe position (on leak between B and J) with the choice that correctly states both the temperature change and whether the liquid is being heated or cooled.

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Study

Question 1 of 205eccefa5bacbc34ba4d487f1

If a leak occurs between the areas labeled "B" and "J" of the control valve shown in the illustration, which of the following problems is most likely to occur? See illustration GS-0043.

Back

Question 1 of 20

5eccefa5bacbc34ba4d487f1

If a leak occurs between the areas labeled "B" and "J" of the control valve shown in the illustration, which of the following problems is most likely to occur? See illustration GS-0043.

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?

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