Locate the source, drive and receiving position for this task
Identify whether each task is discrete dosing, continuous flow or drainage, and specify its medium, load and timing. Trace contact surfaces, pressure and destinations along the diagram before assigning pump and connection roles.
Flow, suction lift and duty cycle describe the installed operating point
Specify actual flow, pressure or suction lift, formulation, temperature and duty cycle. Free flow supports initial screening; the combined load of tubing, valves, wash heads and filters determines the installed operating point.
| Condition to compare | Information required | Selection affected |
|---|---|---|
| Inlet medium | Liquid, intermittent air-containing liquid or gas | Separate liquid supply from gas-liquid aspiration |
| Installed operating point | Suction lift, outlet load and target flow | Do not use free-flow specifications alone to assess an instrument |
| Duty cycle | Start-stop cycles, duty cycle, temperature and maintenance interval | Check long-duration operation and recovery |
Compare product options against task requirements
The following candidate options match this page's responsibilities. Compare them against the operating conditions described, then check capacity, materials and interfaces on the product pages. Card images show representative configurations; suitability must still be confirmed at actual operating points and by application results.
| Product category | Corresponding role | Confirm before selection |
|---|---|---|
| DPL30 liquid diaphragm pump | Liquid supply or auxiliary circulation | Select by installed resistance, actual wash or working fluid and task window |
| DPL60 liquid diaphragm pump | Liquid supply or auxiliary circulation | Judge by peak demand and installed operating point, not free flow alone |
| DPL30H high-backpressure liquid diaphragm pump | Liquid branches requiring higher backpressure capability | Calculate pressure budget and actual flow first, then confirm interfaces and materials |
| DPGL800 gas–liquid diaphragm pump | Suitable gas–liquid aspiration or container-vacuum branches | Confirm inlet medium and waste architecture; not for continuous liquid-only transfer (100% liquid) |
Plan supply and gas-liquid aspiration separately
Define start, stop and source states separately for supply and waste removal. Air entry, foam and depleted sources can occur at different stages. Confirm unloaded or dry-running capability for the specific model.
Action records should link commands, valve or interface states and actual received results. When raw material, container or sample identity changes, reconfirm shared paths and conditions permitting the next step. Completion of drive movement alone does not replace task acceptance.
Assess the complete cycle through branch-specific results
Measure supply, drainage, peak load and duty cycle under actual installation conditions. Washing requires residue-recovery validation; circulation requires temperature or method targets. Pump rotation alone demonstrates neither.
| Validation scenario | Measurement or observation | Interpretation and action |
|---|---|---|
| Branch function | Measure supply, replenishment or drainage results separately | Evaluate the pump against the actual task |
| Boundary loads | Include changes in source level and path resistance | Confirm capacity changes and restart procedures |
Record test medium, configuration, installed path and operating sequence; present routine operating points and boundary results separately. Calculations support design discussions, component documentation checks models, and installed measurements confirm the actual task.
After an abnormality or maintenance, first identify which segment needs recovery
Confusing capacity, free flow and gas flow can lead to an unsuitable drive configuration. Check actual results from the affected step before resuming the next action.
Retain current source, container identity, completed actions, valve or interface state and actual receiving information. Use the table to locate the stage that changed before deciding to retry, continue or restart. After recovery, recheck the relevant operating point before returning an uncertain action to the automatic cycle.