You would open the illustrated valve "A" by...

Question 1 / 205eccef9bbacbc34ba4d45396

Question 1 of 205eccef9bbacbc34ba4d45396

You would open the illustrated valve "A" by __________. See illustration GS-0140.

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Question 1 of 20

5eccef9bbacbc34ba4d45396

You would open the illustrated valve "A" by __________. See illustration GS-0140.

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🔍 Key Concepts

• Identify how the stem threads are cut and how turning the hand wheel moves the stem up or down in Figure A. • Determine the function of parts #4 and #8 – are they packing/gland components or a locking device that must be loosened before the stem can turn? • Recall normal operation of a rising‑stem globe valve ("lefty‑loosey/righty‑tighty" as viewed from the operator’s position) and when that might be reversed.

💭 Think About

• Look closely at the cross‑section in Figure A: if the hand wheel turns clockwise from the top, does the stem move toward or away from the valve seat? What about counterclockwise? • Ask yourself whether the valve could operate properly if you had to loosen #4 or #8 every single time you opened or closed it. What does that suggest about the purpose of those parts? • Compare Figure A and Figure B: which one shows the valve open and which shows it closed? From that, infer which direction the hand wheel must have been turned.

✅ Before You Answer

• Verify whether #4 is clamping sealing/packing material around the stem (meaning it normally stays tight during operation) or actually locking the stem from turning. • Verify whether #8 is part of the body/bonnet structure or a separate lock that must be released – look at whether it directly contacts the hand wheel or stem. • Before choosing, trace the thread path: imagine the stem nut fixed in the bonnet and decide which rotation of the hand wheel will raise the stem and lift the disc off the seat.

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Question 1 of 20

You would open the illustrated valve "A" by __________. See illustration GS-0140.

turning the hand wheel clockwise, as viewed from the top

first loosening part #4, opening the valve then retightening part #4

turning the hand wheel counterclockwise, as viewed from the top

first loosening part #8, then turning the hand wheel counterclockwise as viewed from the top

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Question 1 / 205eccef9bbacbc34ba4d45396

Question 1 of 205eccef9bbacbc34ba4d45396

You would open the illustrated valve "A" by __________. See illustration GS-0140.

Back

Question 1 of 20

5eccef9bbacbc34ba4d45396

You would open the illustrated valve "A" by __________. See illustration GS-0140.

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