Metering Pump Selection FAQ
Summary: The 8 most common selection questions — sizing flow, choosing materials, VFD or not — answered clearly.
Q1: Size flow exactly or with headroom? 1.2-1.5× maximum demand; daily running at 50-80% stroke is most accurate.
Q2: How to set pressure? Rated pressure ≥ system backpressure × 1.2.
Q3: Diaphragm or plunger? Diaphragm for corrosive/hazardous media; plunger for hot, high-pressure, non-corrosible duties.
Q4: PVC, PTFE or PVDF? Follow corrosion tables — or send us the chemical composition.
Q5: Do I need a VFD? For frequent wide-range flow adjustment, choose VFD or servo stroke.
Q6: Can it run unattended? Yes with level alarms and interlocks — see the smart dosing system.
Q7: Standby pump? One-duty-one-standby for critical processes.
Q8: Lead time? Standard models ship within 48h — contact us to confirm stock.