Series G Motor-Driven Metering Pumps LMI

The Series G Metering Pump is designed for high output applications. Water treatment chemicals, process additives, acids, out-gassing fluids, slurries, and many more applications are all handled with ease by this robust metering pump design. The drive incorporates a variable eccentric design which ensures smooth output and reduces system shock. The mechanically actuated diaphragm reduces the possibility of hydraulic oil contamination of process liquid which makes this an ideal pump for water treatment applications. DC variable speed drives are available for external control and automation.


  • High flow rates up to 300 GPH (1136 Liters/hr.)
  • Mechanically Actuated Diaphragm liquid end eliminates flow restrictions
  • Durable, metallic housing designed to withstand tough environments
  • High efficiency motors minimize heat buildup
  • Reliable low flow performance is a result of high performance check valves with machined seats
  • Precision stroke adjustment can be operated while the pump is running or stopped
  • Steady State Accuracy - ± 1% of full capacity over the 10 to 1 turndown ratio
  • UL, CUL, ETL Certified to conform to ANSI/NSF Std 50, CE Certifications


External speed control, manual stroke length


Output Codes with standard liquid end
Max Capacity:   Max Pressure:
SD2 – 0.7 GPH (2.6 l/h) 175 psi (12 Bar)
SD4 – 12 GPH (45 l/h)  150 psi (10.3 Bar)
SD7 – 50 GPH (189 l/h) 100 psi (6.9 Bar)
SD8 – 115 GPH (435 l/h) 75 psi (5 Bar)
SG5 – 106 GPH (400 l/h)  150 psi (10.3 Bar)
SG6 – 147 GPH (556 l/h) 100 psi (6.9 Bar)
SG7 – 300 GPH (1136 l/h) 50 psi (3.4 Bar)

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