Engine Throttle Controller
Engine Throttle Controller


  • Automatically adjusts engine speed to meet demands of pressure, level, load and temperature
  • Speed changes made slowly and smoothly
  • Saves fuel,enginewear,horsepower and labor
  • Perfect for warm-upandcool-down on auto-mated systems
  • One model for both 12 and 24 VDC systems



The AT03069 is a completely reliable heavy duty device developed specifically to automatically control engine speed to meet system demand. Low current, high torque, solid state switching and electronic clutch make it ideal for all automatic and semiautomatic engine systems. Used with the appropriate Murphy SWICHGAGE®, near constant pressure, level and load can be maintained. Check with our engineers for help with other applications where speed control can improve your system.





  • City water systems.
  • Water flood injection.
  • Sprinkler lateral changes.
  • Make-up if a “Gang Pump” stops.
  • Multiple hose-reel irrigation systems.




  • Water or oil storage tanks.
  • Waterflood tanks.
  • Sewer disposal systems.
  • Flood control catch basins.
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