Water flow is established through the unit...

Question 1 / 270705eccef9bbacbc34ba4d453bc

Question 1 of 270705eccef9bbacbc34ba4d453bc

Water flow is established through the unit shown in the illustration when __________. See illustration GS-0155.

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Question 1 of 27070

Water flow is established through the unit shown in the illustration when __________. See illustration GS-0155.

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Identify how the lever E, pilot valve (F/G), and diaphragm (B/C) work together as a pressure‑control valve • Understand what must happen to the main valve disk A for flow to pass from INLET (II) to OUTLET (III) • Think about the pressure force balance on both sides of the diaphragm and disk (area I vs. inlet II)

💭 Think About

• Trace the path of water from the INLET to the OUTLET and note which part physically blocks that path when the unit is shut • Ask yourself: Does moving E by itself guarantee flow, or does it change a pressure condition that then moves another part? • Compare the physical requirement for flow (what must move off its seat) with the pressure condition described in choice C—are they describing separate events or the same event in different words?

✅ Before You Answer

• Verify which component actually opens the main flow passage from II to III (look at where A is seated) • Check whether moving E always results in A lifting, or if there is still a required pressure imbalance across C • Confirm if the situation described in choice C is simply the underlying condition that causes A to tilt, or if it is an unrelated event

Question 1 of 27070

Water flow is established through the unit shown in the illustration when __________. See illustration GS-0155.

"E" is moved from the position shown

"A" is tilted off of its seat

total force above "C" is reduced below the value of the total force acting beneath "C"

all of the above

Question 1 / 270705eccef9bbacbc34ba4d453bc

Question 1 of 270705eccef9bbacbc34ba4d453bc

Water flow is established through the unit shown in the illustration when __________. See illustration GS-0155.

Back

Question 1 of 27070

Water flow is established through the unit shown in the illustration when __________. See illustration GS-0155.

If the question has a related picture, it will appear here.