Failure of the steam pressure reducing valve...

Question 1 / 205eccefa5bacbc34ba4d487ce

Question 1 of 205eccefa5bacbc34ba4d487ce

Failure of the steam pressure reducing valve to deliver proper steam pressure could be caused by __________. See illustration GS-0044.

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Question 1 of 20

5eccefa5bacbc34ba4d487ce

Failure of the steam pressure reducing valve to deliver proper steam pressure could be caused by __________. See illustration GS-0044.

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🔍 Key Concepts

• Operation of a self-actuated steam pressure reducing valve shown in GS-0044 • Relationship between upstream (supply) pressure, valve spring setting, and controlled downstream pressure • Role of the diaphragm and pilot/auxiliary valve in sensing and controlling outlet pressure

💭 Think About

• Look at where the sensing line from the outlet connects to the underside of the diaphragm. How does a change in outlet pressure make the main valve open or close? • Which of the choices describes a condition that would prevent the valve from ever reaching the set outlet pressure, even if the valve were fully open and working correctly? • Which options actually describe parts of the normal control action (how the valve is supposed to work) rather than a fault or failure?

✅ Before You Answer

• Identify on the illustration which side of the diaphragm sees reduced (downstream) pressure and which side sees spring force. • Decide whether frictional losses downstream change the pressure right at the valve outlet, or only farther in the line. • Ask yourself: if the supply pressure entering at the inlet dropped, could the valve still deliver the same reduced pressure at the outlet, even wide open?

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Question 1 of 20

Failure of the steam pressure reducing valve to deliver proper steam pressure could be caused by __________. See illustration GS-0044.

frictional losses downstream of the valve

low pressure in the steam supply to the valve

reduced steam pressure acting on the underside of the valve diaphragm

high pressure steam acting upon the auxiliary valve

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Question 1 / 205eccefa5bacbc34ba4d487ce

Question 1 of 205eccefa5bacbc34ba4d487ce

Failure of the steam pressure reducing valve to deliver proper steam pressure could be caused by __________. See illustration GS-0044.

Back

Question 1 of 20

5eccefa5bacbc34ba4d487ce

Failure of the steam pressure reducing valve to deliver proper steam pressure could be caused by __________. See illustration GS-0044.

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