Locate the source, drive and receiving position for this task
Define all ports, valve states, pressures in each state, shared volume and displacement volume. Follow the diagram to confirm liquid contact, pressure and destination before assigning drive and connection roles.
Plan sources and shared volume for 10-, 16- and 24-port options
List all sources and the common outlet, then select for actual pressure, passage dimensions and shared volume. Confirm PEEK, PCTFE or other wetted configurations for the model and medium; a series-level material name does not establish compatibility.
| Condition to compare | Information required | Selection affected |
|---|---|---|
| Number of sources | 10-, 16- and 24-port configurations and port maps | Define sources, common port and actual connections |
| Flow-path geometry | Passage dimensions, interfaces and shared internal volume | Compare load, delay and displacement |
| Wetted configuration | Stator, rotor and model-specific valve-head materials | Check compatibility with the actual formulation |
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 |
|---|---|---|
| MRV3 multiport rotary valve | Multiple-source selection | Compare 10-, 16- and 24-port options and port diagrams; verify high-pressure suitability separately |
Clear the previous liquid after switching
Stop or coordinate the pump before switching, confirm valve position, then direct retained liquid to the specified destination. Set flushing volume for the preceding liquid and next task.
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.
Evaluate flushing with the most challenging liquid pair
Test correct and unintended connections, pressure and the most difficult liquid pair. Confirm flushing using actual residue or method blanks. Sequential selection among sources does not provide simultaneous independent supply.
| Validation scenario | Measurement or observation | Interpretation and action |
|---|---|---|
| Most challenging switching conditions | Switch from a high-concentration or difficult-to-clear liquid to the next source | Determine displacement volume from residual carryover |
| Valve-position faults | Cross-check source identity and permitted pump actions | Prevent incorrect liquid from continuing into valid samples |
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
Mispositioning, shared-path residue or abnormal switching pressure can affect the next task. Stop pumping and check ports, then flush again after restoring the correct state.
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.