What do these products do in this instrument?
Multiport rotary valves: sampling, flushing and maintenance-bypass selection
Establish the current source and destination in selector-valve configurations, coordinating transfer drives with conditions that permit analysis. Verify old-sample discharge, fresh-sample intake and maintenance states separately.
MRV3 selects sources or destinations and requires a port-state diagram and shared-volume budget. Port count indicates routing options; confirm pressure in each state and independent simultaneous supply requirements separately.
Define connections using the instrument's port-state diagram
This page covers multiport rotary valves. Mark every port, current source, receiving destination and branch requiring isolation, and check connections during aspiration, delivery, cleaning, maintenance and power loss. Valve selection must correspond to conditions permitting the drive action.
Include renewal of shared segments after switching in the sequence
After source switching, shared tubing may retain the previous composition. Record volume and arrival delay from the new source to the receiver, and measure residue and recovery for the actual worst-case switching combination. Confirm port positioning and arrival of new liquid separately.
Translate actual branch conditions into configuration requirements
| Condition | To confirm |
|---|---|
| Connections and pressure | Provide port diagrams and pressure conditions for all operating, cleaning and shutdown states. |
| Shared volume | Identify residue locations after source changes, flushing volumes and discharge destinations. |
| Control and isolation | Check valve-position feedback, pump actions, shutoff leakage and permitted power-off states. |
| Operation | Specific operating conditions |
|---|---|
| Operating-state switching | All ports, valve states, pressures in each state, shared volume and flushing volume |
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| MRV3 multiport rotary valve | Multiple-source selection | Compare 10-, 16- and 24-port options and port diagrams; verify high-pressure suitability separately |
Explore specific operating and validation tasks
Operating-state switching
Define old-sample discharge, fresh sampling, reaction and maintenance-bypass states clearly. After recovery, confirm sample renewal before marking the first measurement cycle as valid.
Confirm product roles in actual operation
| Operation | Measurements and observations | Priority checks |
|---|---|---|
| Operating-state switching | Check unintended connections, leakage, backflow and post-switching residue in each state; measure flushing volume and arrival delay through the complete path | Misalignment, shared-segment residue or abnormal switching pressure may affect the next task |
Compare field and received samples for representativeness. Measure actual refresh and recovery after maintenance.
Do more valve ports mean more channels can supply liquid simultaneously?
Check port connection structure and drive configuration. The number of selectable sources, independent paths and simultaneous-operation capability are different conditions, determined by actual connections in each state.
Nominal volume divided by flow estimates transport time; it does not establish complete sample renewal or representativeness.