When flushing the pump after drafting, connect the hydrant on which side relative to the suction or supply line connection?

When flushing the pump after drafting, connect the hydrant on which side relative to the suction or supply line connection?

• A. Opposite side
• B. Same side
• C. Front side
• D. Rear side

Answer: (B)

Flushing after drafting is about purging air from the suction side and getting the pump primed so water fills the suction line and pump internals. Connecting the hydrant on the same side as the suction or supply line creates a direct path: hydrant water flows into the suction side, through the pump, and out the discharge. This helps push any trapped air out and confirms the suction side is fully filled, reducing the chance of losing prime. If the hydrant were connected on the opposite side, air could remain in the suction line or the purge path would be less direct, making it harder to prime the pump efficiently. Keeping the connection on the same side ensures a straightforward purge and reliable priming during the flush.

Flushing after drafting is about purging air from the suction side and getting the pump primed so water fills the suction line and pump internals. Connecting the hydrant on the same side as the suction or supply line creates a direct path: hydrant water flows into the suction side, through the pump, and out the discharge. This helps push any trapped air out and confirms the suction side is fully filled, reducing the chance of losing prime. If the hydrant were connected on the opposite side, air could remain in the suction line or the purge path would be less direct, making it harder to prime the pump efficiently. Keeping the connection on the same side ensures a straightforward purge and reliable priming during the flush.