The valve illustrated is to be constructed...

The valve illustrated is to be constructed so that the __________. See illustration GS-0055.

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🔍 Key Concepts

• Identify the type of valve shown in the illustration (note the disk in the center of the pipe and the lever handle). • Recall the usual relationship between a lever handle position and the flow direction for this kind of quarter‑turn valve. • Think about which options describe something that is actually controlled by the handle orientation, versus features that involve packing or seat maintenance.

💭 Think About

• Look closely at how the disk is arranged inside the pipe and imagine what happens to the flow when the disk is turned 90 degrees. When would flow be mostly blocked, and when would it be nearly unobstructed? • Which answer choices talk about the position of the lever relative to the pipe or flow, and which talk about maintenance features that you do not see any evidence of in the picture? • For this style of valve, how does an operator quickly tell at a glance whether the valve is open or closed based solely on the handle position?

✅ Before You Answer

• Confirm you can clearly see the disk and how a quarter‑turn of the lever would rotate it between open and closed positions. • Verify which choices describe a visual indication of open/closed based on handle orientation, instead of internal features like packing or lapping the seat. • Before choosing, mentally set the disk to the fully open and fully closed positions and match those with the corresponding handle alignment in the options.

🔍 Key Concepts

💭 Think About

✅ Before You Answer