The valve shown in the illustration is...

Question 1 / 205eccefa5bacbc34ba4d487db

Question 1 of 205eccefa5bacbc34ba4d487db

The valve shown in the illustration is typically used for temperature control of a liquid being heated. Which of the following changes to this unit would be useful in converting the valve for use in controlling the temperature of a cooling system? See illustration GS-0043.

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🔍 Key Concepts

• Thermostatic control valves for heating vs cooling service (fail-close vs fail-open action) • How the remote bulb and capillary (part "J") move the stem to open or close the main seat when temperature rises • The effect of seat orientation and spring force on whether rising temperature causes more or less flow

💭 Think About

• When the liquid being controlled gets hotter, does the valve shown move toward open or closed for the heating service? Trace the force path from bulb "J" through the stem to the seating area. • For a cooling system, when temperature rises, do you want the valve to allow more cooling flow or less? Which change would reverse the valve’s action to match that need? • Looking at the labeled parts, which ones seem to affect only the setpoint/range (how strong the spring or sensing element is), and which ones would actually change the direction in which the valve throttles?

✅ Before You Answer

• Identify which part is the main valve seat that determines whether stem movement opens or closes flow between inlet and outlet. • Decide whether changing the spring force alone would reverse the action, or just change how much force is needed for movement. • Check which option changes the geometry of the flow path or seating direction, rather than simply removing sensing parts or changing adjustment components.

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Question 1 of 20

Change out parts "B" and 'J'.

Remove parts "D" and 'I'.

Exchange part "L" for one that is upward seated.

Exchange part "G" for a heavier force.

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Question 1 / 205eccefa5bacbc34ba4d487db

Question 1 of 205eccefa5bacbc34ba4d487db

Back

Question 1 of 20

5eccefa5bacbc34ba4d487db

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🔍 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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