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Servo Command

Foam Proportioning Pump Module

Literature

Servo Command is a true demand type foam system that automatically balances and proportions foam solution at rates from 0% to 6% regardless of pressure and flow variations up to the maximum flow capacity of the foam concentrate pump, with no recirculation of foam concentrate back to tank, or around the foam pump. A variable speed hydrostatic drive system is employed to vary the speed of the foam concentrate pump to accurately balance the foam concentrate pressure to the water pressure, delivering only the amount of foam concentrate required to meet the demand. For maximum reliability and ease of maintenance, control of the foam system is totally mechanical eliminating the need for fragile electrical or electronic components to activate and/or control the system.

Module with 3,000 gpm Single-stage Centrifugal Pump
Servo command foam proportioning module with Hale 8FGR-300, 3,000 gpm draft rated single-stage centrifugal pump. The module is available with side or top-mounted operator’s controls, and aerial or monitor discharge piping.

Module with 1,000-2,250 gpm Single-stage Centrifugal Pump
Servo command foam proportioning module with Hale QMAX series single-stage centrifugal pump. The module is available with side or top-mounted operator’s controls, and aerial or monitor discharge piping.

Module with 1,000-2,000 gpm Two-stage Centrifugal Pump
Servo command foam proportioning module with Hale QTWO series two-stage centrifugal pump. The pump operator’s controls are located on the left side of the module. The module is available with aerial or monitor discharge piping.

Technical Information