GDR 2-Pump 85 gph / 85 gph pump


GDR Systems

GDR Nutrient Injection Systems accurately and reliably inject nutrients and other chemicals with the simplicity of digital control. Our systems offer superior nutrient monitoring and application and can be ordered in 1,2 or 3 pump configuratiions to meet specific needs.


  • Simple touch screen interface operation supplied with application rate calculator
  • Reduce Annual Turf & Ornamental Maintenance Costs
  • Improve Uniformity of Application
  • Exact Timing of Applications
  • Reduce Fertilizer Usage

System Specifications:

  • Rigid Chemical-Resistant Base
  • Milton Roy Adjustable Diaphram Metering Pumps
  • Corrosion-Resistant Control Enclosure, NEMA 4X Rated
  • 25 ft High-Pressure Braided PVC Flexible Hose for Suction & Discharge
  • Polypropylene Fittings compatible with all Known Irrigation Chemicals, Includes 3/4" poly injection lance with internal check valve

Control Features:

  • Programs Control Product On/Off & Injection Rates through Flow, Time-of-Day and Day-of-Week varification
  • Handles Up to Three Separate Products Simultaneously and Independently
  • Real-Time Clock for Injection Program Execution
  • Review Mode: View Current Programs in Non-Editable Mode
  • Manual Pump Operation for Troubleshooting
  • Actual & Programmed Injection Rates Available from Status Display
  • Accepts either analog or digital, user supplied flow sensor signal

Pump Features:

  • Milton Roy Series 12.3, 30 & 85 GPH Capacity Availability
  • Positive Displacement Hydrolic Diaphram Metering Pump 
  • Accurate Product Delivery across a 10 :1 turndown ratio
  • Alloy 20 Wetted Components are Standard in 12.3 & 30 GPH Pumps. 316 S.S. Components are Standard in 85 GPH pumps
  • Teflon Diaphram
  • Built-in Externally Adjustable Pressure Relief Valve
  • 1 Hp D.C. motors are standard on all Pumps