GM mechanical diaphragm metering pump

A mechanically driven diaphragm metering (dosing) pump engineered for accurate, leak-free chemical dosing and transfer in industrial environments. The pump delivers adjustable, positive-displacement flow with a robust diaphragm and selectable pump-head materials for compatibility with corrosive or abrasive media.

Key features

• Precise metering: flow control via adjustable stroke length or by varying motor frequency for accurate dosing up to the rated capacity.
• Mechanical diaphragm drive: safe, reliable operation with no shaft seals at the liquid side, minimizing leak risk.
• Heavy-duty diaphragm construction: multi-layer composite diaphragm designed for extended life:
  • Outer layer: PTFE (chemical-resistant film)
  • Elastic layers: EPDM rubber
  • Support core: 3.0 mm SUS304 metal insert
  • Reinforcement: nylon fiber layer
  • Full EPDM overlayer for protection and resilience
• Pump head and wetted-component options: SUS304, SUS316, PVC, PTFE to match process compatibility requirements.
• Check-valve choices: SUS304, SUS316, PVC, PTFE with valve balls available in ZrO2 (zirconia), SUS304, SUS316 or ceramic for chemical and wear resistance.
• Motor and drive options: available with two-phase or three-phase standard motors, and explosion-proof motors where required.
• Protection ratings: IP54 or IP55 choices for dust and water ingress protection.
• Wide ambient operating range: -30 °C to 80 °C.

Typical performance range

• Flow: 0 to 500 L/h (select model/setting for required flow)
• Discharge pressure: up to 1.2 MPa
• Power / supply: 110 V / 220 V / 380 V, 50/60 Hz (specify when ordering)

Applications

Suitable for dosing, transfer and injection of liquids in petrochemical, chemical processing, power generation, metallurgy, mining, shipbuilding, light industry, agriculture and defense sectors. Appropriate for high-viscosity fluids, corrosive chemicals and other hazardous liquids where leak-free, accurate metering is required.

Why choose this pump (B2B considerations)

• Material and valve options allow tailoring for specific chemical compatibilities.
• Explosion-proof motor option and IP ratings support safe installation in hazardous areas.
• Modular design simplifies routine maintenance and reduces downtime.
• Multiple motor and control options enable integration with electrical control systems or variable-frequency drives for process automation.

Ordering notes

• Provide required flow rate, discharge pressure, liquid type, preferred wetted-materials, supply voltage, and whether an explosion-proof motor is needed when requesting a quote.
• Specify preferred valve ball material if the process contains abrasive or highly corrosive components.