Which of the listed order of valves...

Question 1 / 205eccef9cbacbc34ba4d457de

Question 1 of 205eccef9cbacbc34ba4d457de

Which of the listed order of valves represents the proper installation of the main feedwater supply line to a marine propulsion boiler?

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Question 1 of 20

5eccef9cbacbc34ba4d457de

Which of the listed order of valves represents the proper installation of the main feedwater supply line to a marine propulsion boiler?

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🔍 Key Concepts

• Feedwater regulator function and where it should be located relative to the boiler drum and the main stop valve • Purpose of a stop valve versus a stop-check valve on boiler feed lines • Which valve must be able to prevent backflow from the boiler into the feed line if a line parts or a pump fails

💭 Think About

• Think about the direction of water flow: from the feed pump toward the boiler. In what order do you want to control flow, regulate level, and prevent reverse flow? • Which valve do you want located closest to the boiler so that the boiler cannot drain back through the line? • Where should the automatic control device (regulator) be placed so it can sense and control boiler water level effectively without being isolated when the line is shut down?

✅ Before You Answer

• Identify which valve type is specifically designed to serve as both a stop valve and a check valve and therefore is usually installed right at the boiler inlet • Confirm that the regulator must be installed so that it is not rendered useless whenever the main stop is closed for isolation • Make sure the arrangement allows you to first isolate the line, then automatically control flow, and finally prevent backflow from the boiler into the feed system

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Question 1 of 20

Which of the listed order of valves represents the proper installation of the main feedwater supply line to a marine propulsion boiler?

Regulator, stop, stop-check

Stop, regulator, stop-check

Stop-check, regulator, stop

Stop-check, stop, regulator

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Question 1 / 205eccef9cbacbc34ba4d457de

Question 1 of 205eccef9cbacbc34ba4d457de

Which of the listed order of valves represents the proper installation of the main feedwater supply line to a marine propulsion boiler?

Back

Question 1 of 20

5eccef9cbacbc34ba4d457de

Which of the listed order of valves represents the proper installation of the main feedwater supply line to a marine propulsion boiler?

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