If a leak occurs between the areas labeled...

Question 1 / 205eccefa5bacbc34ba4d487f1

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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Question 1 of 20

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.

The valve will open with a decrease in temperature below the set point of the liquid being heated.

The valve will close with a decrease in temperature below the set point of the liquid being cooled.

The valve will open with an increase in temperature above the set point of the liquid being heated.

The valve will close with an increase in temperature above the set point of the liquid being cooled.

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Question 1 / 205eccefa5bacbc34ba4d487f1

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?

Quick actions

— No credit card needed