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3. Using a 2-SWITCH™ valve
3.1 Fluidic principle
The 2-SWITCH™ is a 3-port / 2-position valve. This means that three (3) ports can be connected with fittings and
tubings to your application, and that it is possible to choose between two (2) positions linking the ports in two
(2) different manners.
Fluidic 2-way switch
Here is the fluidic diagram of a 2-SWITCH™. The
dark blue “C” port at the bottom of the 2-SWITCH™
is the common port: it can be either connected to
port #1 or to port #2 depending on the chosen
position.
Position 1 connects the common port to port
#1 and Position 2 connects the common port
to port #2. The 2-SWITCH™ enables you to
switch between these two positions.
The Default position of the 2-SWITCH™ when
the 2-SWITCH™ is not powered is Position 1.
The 2-SWITCH™ is a bidirectional valve: the
fluid can flow in both directions inside the 2-
SWITCH™ i.e. from the common port to port
#1 / port #2 AND from port #1 / port #2 to the
common port.
Fluidic on/off switch
Another possibility for using the 2-SWITCH™ is to
connect a plug to either port #1 or port #2. This way,
one of the positions of the 2-SWITCH™ (Position 1 for
port #1 or Position 2 for port #2) becomes a closed
position, and the 2-SWITCH™ acts as a fluidic “on/off”
switch.
Example: A plug (gray square) is connected to
port #2. Position 2 is thus closed. In Position 1
fluids can flow through the valve between the
common port and port #1, whereas in Position 2
the fluidic path is closed between the common
port and port #2.
Warning: The fluidic “on/off” switch configuration
only works if port #1 or port #2 is connected with a
plug. If the common port is plugged then no flow
can circulate through the 2-SWITCH™ (bottom
diagram).
FAQ: Should I fill with liquid the plugged path inside
the 2-SWITCH™ before screwing the plug? (cf. §9)
