Automatic water-based systems designed for emergency or standby use typically include two pumps: a main system pump for high flow conditions, and a pressure maintenance (jockey) pump that maintains line pressure during normal, non-emergency operation.

The main system pump is controlled by pressure. To prevent unnecessary cycling of that larger pump due to small leaks or minor pressure losses, the pressure maintenance pump automatically restores system pressure to its normal setpoint.

In the event of a significant demand or system activation, pressure may drop below the capacity of the maintenance pump, signaling the main pump to start and deliver the higher required flow.

MTH regenerative turbine pumps are ideally suited for pressure maintenance applications requiring low flow and high head performance.
These pumps are not designed for suppression or extinguishing purposes, but to maintain the integrity and readiness of the pressurized system.

60 Hz Jockey Pump Selection Chart

50 Hz Jockey Pump Selection Chart

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