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Ivek Fluid PumpUsually we try to stay away from any type of valve, since our pumps are valveless and act as their own valve.  Recently we ran into a situation where the customer could not purge after the pump was in an idle state for a long period of time (approximately 20-30 minutes).  The material was very expensive and hazardous.  Moving the reservoir helped a little bit, but regardless the fluid was either going to move forward and drip or move backwards and would then force the user to “waste“ several shots to prepare the pump to dispense again.


It was suggested we use a pinch valve on the inlet, mounted closely to the pump.  Extensive testing was done and the results were very good.  It is important that the valve opens just before the dispense cycle is triggered and closed as soon as the dispensing cycle has been completed.  It is also important to use silicone tubing so it can seal together quickly when pinched but then snap back to its original form when released.


Cases like this are a great example of Ivek’s ability to test and adapt to our customer’s needs. We understand that efficiency is crucial and waste can seriously hurt our clients’ bottom line. We strive to deliver the best precision liquid metering and dispensing equipment for your needs. Contact us today if you have a unique dispensing need.

Often we receive calls from automation and manufacturing companies who have problems with their filling and dispensing needs from other vendors. Typically, a piece of equipment has been installed that doesn’t meet specification or the filling is difficult to control. This problem translates to lost or wasted product, costing the organization a tremendous amount of time and money.
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Ivek PumpWhen deciding which OEM pump is best for precise aspirating and dispensing of samples and reagents in both Analytical and IVD instruments, we are often asked the differences between traditional Syringe Pumps and IVEK’s Ceramic Displacement Pumps.  Since both of these can be used to do the same function, what are the pros and cons of each?

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Which positive displacement pump (PD pump) is best for your dispensing needs, linear or rotary? Linear and rotary positive displacement pumps can provide exceptional accuracy and precision. However, each method has their advantages and disadvantages. Positive displacement pumping refers to a pump that retracts in a cavity to generate volume on the suction side and extends to close in the cavity on the discharge. Fluid flows into the suction side during retract and flows out of the discharge during contraction. This is a constant for each cycle.

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