Rotary valve head configurations
Sample collection, sample loop injection, port selection
Description
Valve heads for rotary valves are available with up to 12 port connections and are suitable for sample collection, sample loop injection, for the selection or blocking of a flow path.
The valve housing is made of PCTFE, which offers high chemical resistance and good strength. The plunger is made of PTFE, which has the same chemical properties as the valve housing. Precise channels with only 0.5mm allow smallest internal volume of 2.32 - 2.84 µl (from connection to connection - depending on the configuration) and also a low carry over volume of 0.55 - 1.07 µl (from connection to connection - depending on configuration). The valve heads are dead volume free and can be integrated into the fluidic application on the ¼-28 UNF threads.
These valve heads are suitable for the P200-O and P201-O rotary valves.
Specifications
Pressure (max.)
|
5 bar | 10 bar on request
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Channels diameter
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0.5mm | 0.4 - 1.0 mm on request
|
Internal volume
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2.32 - 2.84 µl (from connection to connection) - depending on the configuration
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Carry over volume
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0.55 - 1.07 µl (from connection to connection) - depending on the configuration
|
Dead volume
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No
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Connection
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1 / 4-28 UNF (flat-bottom)
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Customizable to specific requirements (e.g. higher pressure range, different channel arrangement, different channel diameters, ...)
Standard configurations rotary valve heads
Selection valve head examples
Standard configurations:
- 4 ports - 3 positions - single stage - carry over volume: 1.67 µl, internal volume: 3.45 µl
- 5 ports - 4 positions - single stage - carry over volume: 1.67 µl, internal volume: 3.45 µl
- 7 ports - 6 positions - single stage - carry over volume: 1.67 µl, internal volume: 3.45 µl
- 9 ports - 8 positions - single stage - carry over volume: 1.67 µl, internal volume: 3.45 µl
- 10 ports - 9 positions - single stage - carry over volume: 2.80 µl, internal volume: 4.50 µl
- 12 ports - 11 positions - single stage - carry over volume: 2.80 µl, internal volume: 4.50 µl
Sample collection, sample loop injection examples
Standard configurations:
- 3 ports - 2 positions - single stage
- 4 ports - 2 positions - single stage
- 6 ports - 2 positions - single stage - carry over volume: 0.55 µl, internal volume: 2.32 µl
- 6 ports - 2 positions - two-stages
- 12 ports - 2 positions - two-stages
- 12 ports - 2 positions - four stages
On/Off examples
Standard configurations:
- 2 ports - single stage - carry over volume: 0.98 µl, internal volume: 2.75 µl
- 4 ports - two-stage
- 8 ports - four stages
Software control rotary valves
You can find more information in the online manual: https://wiki.pumps-valves.eu/RVM_rotary_valves
Downloads
Rotary valves overview 369 KB
Rotary valves datasheet 616 KB