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What Is the Fire Pump Shutoff Head and Why It Matters

Discover what shutoff head means in fire pump systems and why it’s crucial for safe and efficient operation.

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Shutoff head is the maximum pressure a fire pump can generate at zero flow.

Why It Matters:

  • Helps avoid over-pressurizing the system.

  • Affects pipe design and safety devices.

  • Key factor in controller selection and system layout.

NFPA 20 Note:

  • Shutoff pressure must not exceed 121% of rated pressure for centrifugal pumps.

Always check shutoff head during system design and annual flow tests.

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