Practice question

Why should transfer valves be opened and closed deliberately rather than abruptly?

  1. Abrupt flow changes can create pressure and surge effects and increase spill risk
  2. Fast valve movement is required by Texas DPS
  3. Slow valve movement disables emergency shutoffs
  4. Valve speed has no operational effect

Answer: A — Abrupt flow changes can create pressure and surge effects and increase spill risk

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