Used Fluid Metering FMI QV Lab Pump with R405 Stainless Steel Head

Variable-Speed Valveless Piston Pump for Precision Process Metering

Achieve exceptional fluid control in demanding laboratory and pilot plant environments without overextending your equipment budget. The pre-owned Fluid Metering (FMI) QV Variable-Speed Valveless Piston Pump, paired with the rugged R405 Stainless Steel Pump Head, is a precision fluid metering solution designed for reliable positive displacement flow.

By sourcing this fully tested, used FMI metering system through HiTechTrader, research facilities, system integrators, and process engineers can secure highly accurate, pulsation-free metering for aggressive chemicals, analytical reagents, and high-purity fluids at a fraction of the cost of buying new.

Condition & Unit Details

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

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

• Included Components: FMI QV Variable-Speed 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 Technology for Accurate Fluid Metering

Traditional metering pumps rely on check valves that are prone to clogging, sticking, or failing under continuous operation. Built on FMI’s proprietary CeramPump® technology, this system uses a single rotating ceramic piston moving inside a matched precision cylinder to displace fluid without check valves or bypass systems.

This elegant, valveless configuration offers highly accurate volumetric control, extremely low pulsation during fluid transfer, and minimal maintenance due to having fewer moving parts. Because only one component moves in the fluid path, the pump maintains highly stable volumetric metering over millions of operating cycles.

Variable-Speed Flow Control & High-Resolution Metering

The QV variable-speed drive system provides incredibly fine control over flow output by adjusting both the piston stroke length and the rotational speed. The stroke length is infinitely adjustable from 0–100%.

When paired with the 1/4-inch piston in the R405 stainless steel pump head, this dual-control system provides an exceptional dispense resolution of approximately 0.016 to 0.32 mL per revolution. While the QV drive can support up to 2304 mL/min with larger heads, this specific configuration delivers a realistic output ranging from the low-hundreds up to approximately 1–2 L/min, making it ideal for both precise low-flow dosing and higher-flow transfer applications. Because the pump is reversible, it can deliver fluid in either direction while maintaining accurate volumetric control.

R405 Stainless Steel Head for Extreme Chemical Compatibility

The R405 stainless steel pump head belongs to the FMI R-series metering family and provides excellent durability and corrosion resistance. The wetted materials—including the 316 stainless steel pump head, precision ceramic piston/cylinder liner, and fluorocarbon (PTFE) seals—provide broad compatibility with aggressive chemicals and solvents.

Unlike standard polymer pump heads, this stainless steel configuration supports stable metering performance at elevated temperatures up to 177 °C (350 °F) and system pressures up to 100 psig (6.9 bar).

Reliable Operation for Continuous Process Applications

The QV pump drive is engineered for reliable 24/7 operation in demanding industrial environments. It features a fan-cooled motor system and thermal protection for continuous operation. Furthermore, the compact 1/4-inch shaft configuration allows for straightforward integration into laboratory equipment, automated analyzers, pilot plant skids, and industrial OEM process systems.

Technical Specifications

• Manufacturer: Fluid Metering, Inc. (FMI)

• Pump Model: QV Variable-Speed Pump Drive

• Pump Technology: CeramPump valveless positive displacement piston

• Pump Head Model: R405 stainless steel pump head (R-Series)

• Shaft Size: 1/4 inch diameter

• Typical Flow (1/4" piston): Low hundreds mL/min up to ~1–2 L/min (depending on speed)

• Dispense Resolution: Approx. 0.016–0.32 mL per revolution

• Operating Pressure: Up to approx. 100 psig (6.9 bar)

• Operating Temperature: Approx. 0–177 °C (32–350 °F)

• Wetted Materials: 316 stainless steel head, ceramic piston/cylinder, fluorocarbon seals

• Flow Adjustment: Stroke adjustable from 0–100% plus variable motor speed

• Flow Direction: Reversible / bidirectional

Nationwide Shipping & Availability

Waiting on long OEM lead times for high-precision, high-temperature metering pumps can stall critical process development. 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 facility is located locally on the East Coast, in major tech and biotech hubs like Canada, or anywhere across the globe, we ensure your used fluid processing equipment arrives safely and ready for immediate deployment.

Frequently Asked Questions (FAQ)

What fluids and temperatures can the FMI R405 pump head handle? The R405 pump head features a 316 stainless steel casing, a ceramic piston/cylinder, and PTFE seals. This robust construction provides broad chemical compatibility and allows the pump to safely handle aggressive industrial solvents and high-purity fluids at elevated temperatures up to 177 °C (350 °F) and pressures up to 100 psig.

How is the flow rate adjusted on the FMI QV pump? The FMI QV pump offers dual flow control. Operators can infinitely adjust the stroke length from 0 to 100% to change the displacement volume per stroke, and they can simultaneously adjust the variable-speed motor to control the dispensing rate. This allows for extremely fine tuning from near-zero microliters up to maximum transfer rates.

What does "dispense resolution" mean on an FMI pump? Dispense resolution refers to the exact volume of fluid pushed through the pump during one complete rotation (revolution) of the piston. With the 1/4" piston in the R405 head, the dispense resolution can be dialed in anywhere from 0.016 mL to 0.32 mL per revolution, providing incredible accuracy for automated chemical dosing and reagent sampling.

Buy the Used FMI QV Lab Pump with R405 Stainless Steel Head

HiTechTrader offers the pre-owned Fluid Metering Inc. QV Variable-Speed Valveless Metering Pump with R405 Stainless Steel Pump Head, providing laboratories and system integrators with a reliable solution for precision fluid dosing and chemical process control.

Contact HiTechTrader today to:

• Request pricing

• Confirm exact port connections, drive speeds, and tubing compatibility

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