Practice question The tank-to-pump valve allows: Discharge water to be sent back to the tank for coolingOnboard tank water to feed the pump's intakeThe tank fill line to be opened from a hydrant onlyThe pump to be drained Answer: B — Onboard tank water to feed the pump's intake The correct answer is shown above. Try the full quiz for additional practice. Practice more: NFPA D O Apparatus Practice Questions - NFPA 1002 Driver/Operator - Apparatus (Pumper) Certification Exam Exam →