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Miniature OEM Pumps for Medical Diagnostic Instrumentation

Fri, 07/12/2013 - 5:23pm
MDT Staff

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Miniature, Stepper driven Valveless OEM Pumps from Fluid Metering, Inc. (FMI) are ideal for low and micro-volume fluid control in Medical Diagnostic and Clinical Chemistry Instrumentation. FMI OEM pumps integrate FMI's unique patented CeramPump valveless pumping principle with precision stepper control. The CeramPump utilizes one moving part, a sapphire-hard ceramic piston, to perform all fluid control functions, eliminating valves typically present in low volume metering technologies.

The valveless function is accomplished by the synchronous rotation and reciprocation of the ceramic piston within a precisely mated ceramic liner. The reciprocation action of the piston, similar to a standard piston pump, accomplishes the pumping function. However, that’s where the similarity ends.  The piston also rotates, alternately aligning a flat at the end with the inlet and outlet ports of the pump. When the flat is aligned with the inlet port, fluid can be drawn into the pump. When the flat is aligned with the outlet port, fluid can exit the pump. Only one port is open at any time and at no point are both ports interconnected. This effectively functions as, and replaces, conventional check valves. 

For more information, visit www.fmipump.com.

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