STH and STQ Duplex Metering Pumps from Fluid Metering, Inc. are designed for precision mixing, diluting and proportional metering for OEM medical, analytical and industrial instrumentation.
FMI’s OEM Duplex Metering Pumps consist of two FMI valveless pump heads direct coupled to a single variable stepper motor drive. The displacement of each pump head is independently adjustable. A variety of pump head sizes can be used in combination to achieve dispensing ratios from 1:1 up to 500:1 from microliters to liters.
OEM Duplex Metering Pumps feature CeramPump valveless piston pumping technology. The CeramPump has one moving part in the fluid path, a sapphire-hard ceramic piston, which accomplishes both pumping and valving functions. The valveless pump design eliminates multiple syringes, valves, actuators and drivers. OEM Duplex Metering Pumps can dispense multiple maintenance-free cycles at ±1% precision without recalibration, according to the company.
The FMI pump has unidirectional continuous flow, utilizing two separate ports for input and output. Throughput of the FMI CeramPump is significantly increased over syringe designs which both fill and dispense through the same single port.
