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Why choose a Flow Selection Valve?
Eliminate tubing between valves
Bio-Chem Valve™ Flow Selection Valves eliminate the need for tubing sets to connect
between individual valves thereby reducing the number of connections and potential leak
points.
Equivalence of internal flow paths
Unlike linear manifolds or valves connected by tubing sets, Flow Selection Valve flow paths
are all the same length which means they have equal pressure drop, equal response times
and equal internal volumes.
Individual control of flow paths
Unlike other valves with multiple ports, each flow path has its own associated actuation
mechanism and can be controlled individually. This means that there is no need to pass
one port to connect to another as with rotary valves.
Economic considerations
Flow Selection Valves offer an economic alternative to either: a) multiple single valves and
their associated, necessary tubing sets, or b) multi-port valves that require sophisticated
control systems for operation.
Applications
Bio-Chem Valve™ Flow Selection Valves are typically used in one of two main applications: Flow Mixing (flow from multiple inlets to one
common outlet), and Flow Selection (flow from common inlet split into multiple outlets).
080T4 Flow Selection Valve used as flowmixing device
080T4 Flow Selection Valve in flow splitting application
080T6 Flow Selection Valve. Note: Ports are equidistant
from center common port ensuring that all flow paths
are identical.
Flow Mixing
Flow Selection / Stream Splitting
When Bio-Chem Valve™ Flow Selection Valves are used as flow
mixing devices the flow from the inlets can be mixed together into a
single stream under a variety of conditions:
•
Each inlet can be selected individually so the outlet is one
singular outgoing stream.
•
Any combination of inlets can be selected so the outlet is a
mixture of the incoming streams. Outlet composition will
depend on pressure and fluid viscosity in each stream.
•
Each inlet can be constantly adjusted to form a flow gradient.
(Please discuss this special application with your regional sales
office)
When the flow pattern is reversed, Flow Selection Valves are used to
divert flow from a common port to either a single or multiple outlets:
•
In flow selection applications, the common inlet is diverted to
one of the available outlets.
•
For stream splitting, the common inlet is split between the
available outlets either in a fixed or adjustable percentage. The
split can be controlled from one outlet up to the maximum
number of outlets in that valve.