Mechanical Diaphragm Metering Pumps
Main Performance Parameters
- Maximum flow rate: 2000 L/h
- Maximum discharge pressure: 12 bar
- Adjustment range: 30%-100%, steady-state accuracy ±1%
- Suction lift height: up to 3 m water column
- Maximum inlet pressure: 2 bar
- Maximum ambient temperature: +40°C

Main Features
Drive End
- Variable eccentric mechanism adjustment ensures smooth changes in flow pulsation.
- Reinforced structural design suitable for harsh operating environments.
- Wear-resistant ball bearings for more stable operation.
- Oil bath lubrication extends the service life of drive components.
- Flow adjustment available in both shutdown and running states; adjustable via manual, electric, or variable frequency modes.
Hydraulic End
- GM series mechanical diaphragm metering pumps hold a Chinese design patent (ZL201730590732.5).
- Mechanically driven diaphragm with no diaphragm guard on the material side, facilitating material passage.
- Pump head materials include PVC, PVDF, 316SS, high-viscosity materials, etc., suitable for conveying various materials.
- Self-cleaning check valve structure for easy maintenance.
Control Methods
- Manual control: Adjust flow via manual volume adjustment mechanism.
- Electric control: Requires an optional electric stroke controller (adjusts stroke length) for local or remote flow adjustment.
- Electric stroke controller (see product catalog "Electric Stroke Controller" for details):
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- Power supply: Single-phase 220V/50HZ
- Input/output signal: 4-20mA analog signal
- Variable frequency control: Requires an optional variable frequency motor; adjusts flow via a frequency converter (regulates stroke speed).
- Note: The configured frequency converter must have vector control and heavy-load capabilities.
Main Applications
- Environmental protection, petrochemical, chemical, refining, power, metallurgy, pharmaceutical, food, water treatment, and other industries.
Optional Accessories
- Optional accessories include filters, calibration columns, pulsation dampeners, safety valves, back pressure valves, etc.
GB Series Mechanical Diaphragm Metering Pumps
- For PVC hydraulic ends within the GM0002-0050 range with interface code R, the metering pump comes with an injection mesh, foot valve (strainer assembly), counterweight (ceramic sleeve), and 6m hose.


Standard Motor Performance Parameters
- Power supply: 380V three-phase, 220V single-phase, 50Hz
- Protection class: IP55
- Insulation class: F class
- All motors comply with IEC standards
Available Options
- Double diaphragm rupture pressure gauge detection
- Double diaphragm rupture pressure gauge detection and pressure switch detection
