Series G Metering Pump
Higher Output for Demanding Applications
The LMI Series G Metering Pump is designed with rugged construction to tackle the toughest challenges and is now certified with NSF/ANSI 61 and 372 for municipal compliance and safety.
Available in two motor-driven models, SD and SG, the Series G pumps feature durable aluminum construction and are engineered to handle higher output applications in harsh environments. Perfectly suited for water treatment processes like coagulation and flocculation, this pump offers a reliable solution for municipal and industrial needs.
Combining a heavy-duty industrial drive with state-of-the-art design, the Series G metering pump features a mechanically actuated diaphragm that delivers smooth output while minimizing system shock and preventing hydraulic oil contamination.
With external speed control, stainless steel fasteners, and NSF certifications, the Series G is the ideal choice for water treatment applications.
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Overview
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Applications
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Specifications
Benefits of the Series G Metering Pump
The Series G Metering Pump is engineered for durability and precision, making it a robust solution for high-demand applications. It offers several key advantages over solenoid pumps and lost-motion designs, making it an ideal choice for tough industrial environments.
Key Benefits:
- Robust Worm Gear Drive: Unlike solenoid pumps, the Series G features a metallic worm gear drive combined with an industrial-duty variable eccentric stroke adjustment mechanism. This design ensures smooth velocity profiles and a 10:1 turn-down ratio.
- Durable Diaphragm Design: The PTFE high-performance diaphragm reduces the stresses typically found in other designs, enhancing longevity. All gear components are lubricated in an oil bath, contributing to a longer life span.
- Versatile Liquid End Options: Available in three frame sizes, the Series G pump supports a wide range of liquid ends to suit various applications.
- Manual Control: Precise stroke length adjustments allow for exact flow control, ensuring accuracy and efficiency.
Standard Features:
- High flow rates up to 312 GPH (1180 LPH)
- Mechanically actuated diaphragm liquid end, eliminating flow restrictions
- Rugged metallic housing built to withstand harsh environments
- High-efficiency motors that minimize heat buildup
- Reliable low-flow performance, thanks to high-performance check valves with machined seats
- Precision stroke adjustment, operable while running or stopped
- ± 1% steady-state accuracy over the 10:1 turn-down ratio
- Wide liquid temperature range: 14° to 122°F (-14° to 50°C)
- 2-part epoxy coating for extra protection
- UL, CUL, ETL certifications
- Now certified for NSF/ANSI 61 and 372 for municipal compliance and safety
Optional Features:
- Safety valves
- Back pressure valves
- Pulsation dampeners
- Degassing valve
- Repair and preventive maintenance kits
- Calibration columns
The Series G Metering Pump combines high-performance design with reliability, making it a top choice for precise water treatment and industrial applications.
Applications for the Series G Metering Pump
The rugged design and heavy-duty construction of the Series G Metering Pump make it an ideal choice for low-pressure, high-output applications in challenging environments, including:
- Water Treatment
- Wastewater Treatment
- Industrial Processing
- General Industry
- Agriculture
- Chemical Processing
- Other – Contact your local representative for specialized applications
Built to handle demanding conditions, the Series G pump delivers reliable performance across a wide range of industries and applications.
Output Codes with Standard Liquid End
| Output Code | Max Capacity (GPH) | Max Capacity (L/h) | Max Pressure (PSI) | Max Pressure (Bar) |
|---|---|---|---|---|
| SD2 | 0.7 | 2.6 | 175 | 12 |
| SD4 | 12 | 45 | 150 | 10.3 |
| SD7 | 50 | 189 | 100 | 6.9 |
| SD8 | 115 | 435 | 75 | 5 |
| SG5 | 106 | 400 | 150 | 10.3 |
| SG6 | 147 | 556 | 100 | 6.9 |
| SG7 | 300 | 1136 | 50 | 3.4 |