Skip to main content

Rotary valve head configurations

Sample collection, sample loop injection, port selection

Ventilkopf-Konfigurationen Motorventile
Motorventil Kopf

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
Channels diameter 0.5mm | 0.4 - 1.0 mm on request
Internal volume 2.32 - 2.84 µl (from connection to connection) - depending on the configuration
Carry over volume 0.55 - 1.07 µl (from connection to connection) - depending on the configuration
Dead volume No
Connection 1 / 4-28 UNF (flat-bottom)

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
Example: 7 ports - 6 positions - single stage
Example: 7 ports - 6 positions - single stage
Example: 7 ports - 6 positions - single stage - 3D
Example: 7 ports - 6 positions - single stage - 3D
Example: 9 ports - 8 positions - single stage
Example: 9 ports - 8 positions - single stage
Example: 9 ports - 8 positions - single stage - 3D
Example: 9 ports - 8 positions - single stage - 3D

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
 Example: 4 ports - 2 positions - single stage 1
Example: 4 ports - 2 positions - single stage 1
 Example: 4 ports - 2 positions - single stage 2
Example: 4 ports - 2 positions - single stage 2
 Example: 4 ports - 2 positions - single stage 3D
Example: 4 ports - 2 positions - single stage 3D
 Example: 6 ports - 2 positions - single stage 1
Example: 6 ports - 2 positions - single stage 1
 Example: 6 ports - 2 positions - single stage 2
Example: 6 ports - 2 positions - single stage 2
 Example: 6 ports - 2 positions - single stage 3D
Example: 6 ports - 2 positions - single stage 3D
 Example: 12 ports - 2 positions - three stages 3D
Example: 12 ports - 2 positions - three stages 3D

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
 Example: On / Off - 2 ports - single stage
Example: On / Off - 2 ports - single stage
 Example: On / Off - 2 ports - single stage 3D
Example: On / Off - 2 ports - single stage 3D
 Example: On / Off - 8 ports - three stages 3D
Example: On / Off - 8 ports - three stages 3D

Software control rotary valves

You can find more information in the online manual: https://wiki.pumps-valves.eu/RVM_rotary_valves