NFPA 1901 requires each fire pump to be equipped with which device?

• A. Temperature control
• B. Pressure control
• C. Flow meter
• D. Alarm system

Answer: (B)

The main idea being tested is automatic regulation of the fire pump’s discharge pressure to match demand. NFPA 1901 requires a pressure control device on each fire pump so the system can automatically maintain a chosen discharge pressure as outlets are opened or closed and flow changes.

This device acts as a governor: it senses the downstream pressure and adjusts pump output to keep the pressure within the intended range. When more outlets are used, the device raises or maintains pressure; when demand drops, it reduces output to prevent overpressure. This ensures consistent nozzle pressure, protects hoses and fittings, and makes pump operation safer and more reliable for firefighters.

Temperature control isn’t what NFPA 1901 mandates for pump operation, and a flow meter, while useful for measurement, isn’t the required device for regulating pressure. An alarm system may be present, but the standard-specific device it calls for to regulate performance is the pressure control.