Fluid Metering Catalog - Flipbook - Page 10

Innovative Designs
As the piston is pulled back
and the piston flat opens
to the inlet port, suction is
created and fluid fills the
pump chamber. As the
piston reaches the highest
point in the reciprocation
cycle, the pump chamber
is now at its maximum
volume capacity.
Continuing the rotation,
the inlet port is then
sealed and crossover
occurs. As the inlet port
is sealed and the pump
chamber is full, the
outlet port opens up.*
Continuing the reciprocation
and rotation, the piston is
forced down and the piston
flat opens to the outlet port.
Discharge is created and fluid
is pumped out. The piston
bottoms for maximum fluid
and bubble clearing.
Continuing the rotation, the
outlet port is then sealed
and crossover occurs. As the
outlet port is sealed and the
pump chamber is empty,
the inlet port opens to start
another suction stroke.*
SUCTION
STROKE
CROSSOVER
POINT
DISCHARGE
STROKE
CROSSOVER
POINT
® CeramPump Valveless Technology
Our CeramPump® valveless technology simplifies fluidic
architecture with one moving part in the fluid path. Its
internal sapphire-hard ceramics are chemically inert,
dimensionally stable, and abrasion resistant.
The valveless pumping function is accomplished
by the synchronous rotation (spinning motion)
and reciprocation (up and down movement) of
the ceramic piston within its precisely mated
ceramic cylinder liner. Each complete piston revolution
results in the suction-discharge cycle as seen below (Fig. 1).
The piston always bottoms for maximum fluid and bubble clearing.
ology simplifies fluidic
*Only one port is open at any time to ensure zero cross contamination.
At no point are the inlet and outlet ports interconnected.

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