Earthsafe M1 DEF Pump

M1: Simplex Fuel Transfer Pump

Flow: 3, 5, 10, 15, 25 GPM (12, 20, 40, 60, 100 LPM)

The M1 Simplex Pump Set is used to Transfer Fuel to and from Emergency Power Generators.  The pump may be located at a day tank or sub-base tank to suction fuel from a remote storage tank for local tank refill.  The M1 is also used at sub-base tanks as a return flow pump for overfill protection.

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  • Flow: 3, 5, 10, 15, 25 GPM (12, 20, 40, 60, 100 LPM)
  • Motor: TEFC, 0.5 to 1.0 HP (0.33 - 0.75 KW)
  • Power: 120-230 VAC, 1 Phase, 50-60 HZ
  • Enclosure: Weatherproof NEMA 5, (IP 65) Powder Coat Steel (RAL 7035) or Stainless Steel Optional


  • Ball Valves, Inlet and Outlet
  • Inlet Y-Strainer
  • Outlet Check Valve
  • Inlet Compound Gauge -30 to + 130
  • Outlet Pressure Gauge 0-100 PSI
  • Containment Basin
  • Leak Sensor
  • Flow Sensor
  • Floor Mount Stand 24 IN (600) Height

High Reliability: The M1 Simplex Pump Set is designed for reliable fuel transfer in emergency power systems at critical facilities. Its innovative compact design has a minimal footprint while delivering 1 to 25 GPM (4 to 100 LPM) of fuel to serve emergency generators and boilers.

Integration Ready: The units are designed for direct integration into generator control and monitoring systems for CAT, Cummins, MTU, Kohler and other generator suppliers. The mechanical design is based on Viking positive displacement pumps and is complete with strainers, check valves, ball, valves, pressure / vacuum gauges, relief valves. The unit is mounted on an integral containment with leak detection monitoring.

Controls OnBoard: The Simplex Pump Set includes a motor starter panel with disconnect switch. The motor starter / drive includes current sensors for performance feedback to the duplex pump controller. The C11 Controller provides duplex pump operation and monitoring with HOA switches and an emergency stop.