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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

A supervisory signal for a valve tamper switch must be initiated within what threshold of movement?

Section 5.11.2.1 states the signal must be initiated within the first two turns of the hand wheel or when the valve has moved 20% from its normal position.

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Question: A supervisory signal for a valve tamper switch must be initiated within what threshold of movement?

Answer options:

  • 1 turn or 10% travel
  • 3 turns or 25% travel ✅ 2 turns or 20% travel
  • 4 turns or 50% travel

Correct answer: 2 turns or 20% travel

Explanation: Section 5.11.2.1 states the signal must be initiated within the first two turns of the hand wheel or when the valve has moved 20% from its normal position.

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