Used Fluid Metering FMI Lab Pump Model QD with Stainless Steel R405 Head

High-Speed Valveless Metering Pump for Precision Dosing & Chemical Feed

Achieve precision metering and dispensing in demanding laboratory and industrial applications without exhausting your equipment budget. The pre-owned Fluid Metering (FMI) Lab Pump Model QD, equipped with an R405 stainless steel pump head and a 1/4" shaft, provides highly accurate, positive displacement fluid control.

By sourcing this fully tested, used FMI valveless pump through HiTechTrader, research facilities and pilot plants can secure reliable, pulsation-free metering for chemical feed, reagent dosing, and chromatography support at a fraction of the cost of buying new.

Condition & Unit Details

• Condition: Fully inspected, used metering pump in excellent working condition.

• Testing: Powered on, drive motor and stroke adjustment mechanisms fully tested for smooth, bidirectional operation by our technicians.

• Included Components: FMI QD Drive module and R405 Stainless Steel Pump Head.

• The HiTechTrader Guarantee: Backed by our standard 30-day limited warranty. We have been a trusted provider of high-quality used laboratory and scientific equipment since 1982.

CeramPump Valveless Piston Technology

Traditional metering pumps rely on check valves that can clog, stick, or fail over time. The FMI QD drive utilizes proprietary CeramPump valveless piston technology, delivering accurate, repeatable positive displacement with only one moving component in the fluid path.

The stroke length can be seamlessly adjusted from zero to maximum, allowing fully variable flow in either direction without the need for bypass lines or complex control hardware. This makes the QD pump ideal for continuous process dosing, batching, and high-precision filling.

R405 Stainless Steel Head Performance

When paired with an R-series stainless steel pump head such as the R405, the QD platform supports highly precise flow rates ranging from approximately 40 to 150 mL/min (depending on the exact piston size and motor RPM configuration).

The robust stainless steel head and ceramic internals provide excellent chemical and corrosion resistance for aggressive and high-purity fluids. It can handle a wide range of viscosities, pressures (up to 100 psig), and temperatures with a long service life and minimal maintenance. Furthermore, the 1/4" shaft configuration integrates easily with existing fixtures and OEM systems while maintaining a compact footprint.

Technical Specifications

• Manufacturer: Fluid Metering, Inc. (FMI)

• Drive Model: QD High-Speed AC Pump Drive

• Pump Head: R405 Stainless Steel (R-Series wet end)

• Pump Type: Valveless Positive Displacement Piston Pump

• Shaft Size: 1/4" Diameter

• Flow Rate Range: Approx. 40–150 mL/min (Configuration dependent)

• Maximum Pressure: Up to 100 psig

• Flow Adjustment: Continuous from 0 to 100% of maximum (Bidirectional)

• Operating Mode: Continuous or batch metering/dispensing

• Fluid Path Materials: Stainless steel head, ceramic piston/cylinder, chemically resistant seals

Typical Laboratory & Industrial Applications

This FMI QD with R405 stainless steel head is an excellent choice for environments requiring accurate, pulsation-free metering in a compact, reliable package, including:

• Chemical feed and reagent dosing

• OEM metering system integration

• Chromatography support

• Pilot plant skids and process control

• General laboratory fluid transfer

   

Nationwide Shipping & Availability

Waiting on long OEM lead times for specialized metering pumps can halt your pilot plant or analytical workflows. Operating out of our primary facility in Coatesville, Pennsylvania, HiTechTrader provides rapid, secure shipping to research institutions, pharmaceutical labs, and industrial pilot plants nationwide.

Whether your located locally on the East Coast, in major biotech and tech hubs like the San Francisco Bay Area in  California, or anywhere across the globe, we ensure your used fluid processing equipment arrives safely and ready for immediate deployment.

Frequently Asked Questions (FAQ)

What is an FMI valveless metering pump? Unlike traditional pumps that use check valves (which can clog or fail), FMI valveless pumps use a rotating and reciprocating ceramic piston to draw and dispense fluid. This design provides drift-free, highly accurate positive displacement with only one moving part in the fluid path.

Why use a stainless steel R405 pump head? The R405 stainless steel pump head provides excellent mechanical strength and superior chemical and corrosion resistance compared to standard plastic heads. This makes it ideal for handling aggressive chemicals, high-purity fluids, and operating at higher system pressures up to 100 psig.

Can the FMI QD pump run in reverse? Yes. The flow direction on the FMI QD pump is fully reversible. Operators can change the flow direction simply by adjusting the stroke control scale past zero, allowing fluid to be pumped in the opposite direction without changing the tubing or stopping the motor.

Buy the Used FMI QD Lab Pump with R405 Head

HiTechTrader offers the pre-owned Fluid Metering FMI Lab Pump Model QD with the Stainless Steel R405 Head, providing laboratories and industrial facilities with a durable, high-performance solution for precision fluid dosing.

Contact HiTechTrader today to:

• Request pricing

• Confirm exact flow-rate configurations and tubing compatibility

• Discuss expedited shipping options to minimize your lab's downtime