Which of the following statements describes...

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Question 1 of 2066636eef28f7522a1c51fb84

Which of the following statements describes the function of the device labeled "C" shown in the illustration? Illustration MO-0115

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Question 1 of 20

66636eef28f7522a1c51fb84

Which of the following statements describes the function of the device labeled "C" shown in the illustration? Illustration MO-0115

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🔍 Key Concepts

• Pneumatic symbols for a pressure-reducing valve versus a relief (safety) valve • How control air is produced from 30 bar start air and delivered at about 7 bar to the air control reservoir • The relationship between devices B, C, E, F, and the gauge D in this "Control Air Pressure‑Reducing Unit"

💭 Think About

• Trace the air path from the 30 bar start air reservoir through the components to the 7 bar control air reservoir. Where in that path is the actual pressure drop achieved? • Compare the symbol and connections of device C to the symbol and connections of device F. Which one looks like a safety/relief valve open to vent, and which one is clearly in the main flow line? • Ask yourself whether device C serves a special function just for ancillary services, or if it is clearly part of the main pressure-reduction train feeding the control air reservoir.

✅ Before You Answer

• Verify which component(s) are directly in the main flow line between the 30 bar source and the 7 bar outlet. • Check which component is connected so that it will vent to atmosphere only when pressure gets too high (typical of a relief/safety valve). • Confirm whether devices B and C appear identical and parallel, suggesting the same function (e.g., duty/standby), or whether one is clearly a pilot or modifier of the other.

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Question 1 of 2066636eef28f7522a1c51fb84

Which of the following statements describes the function of the device labeled "C" shown in the illustration? Illustration MO-0115

Back

Question 1 of 20

66636eef28f7522a1c51fb84

Which of the following statements describes the function of the device labeled "C" shown in the illustration? Illustration MO-0115

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

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