Used Fluid Metering FMI RP-SY Lab Pump with R405 Stainless Steel Head

Variable-Speed Valveless Piston Pump for Precision Chemical Metering

Achieve highly precise, repeatable fluid metering in a compact footprint without compromising your laboratory or pilot plant budget. The pre-owned Fluid Metering (FMI) RP-SY Variable-Speed Metering Pump, equipped with an R405 stainless steel pump head, is designed for accurate dosing, dispensing, and continuous flow control in demanding chemical processes.

By sourcing this fully tested, used FMI valveless pump through HiTechTrader, research facilities, industrial engineers, and OEM builders can secure reliable, pulsation-free metering for aggressive chemicals, solvents, 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 RP-SY 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.

Valveless CeramPump Technology for Precise Metering

Traditional metering pumps rely on check valves that can easily clog, stick, or fail during continuous operation. The FMI RP-SY pump utilizes proprietary CeramPump® valveless piston technology, providing accurate positive displacement metering with only one moving component in the fluid path.

In this design, a rotating ceramic piston moves within a precision ceramic cylinder to create controlled fluid displacement. This approach offers highly accurate volumetric metering, minimal pulsation during fluid transfer, and extremely reliable operation with aggressive chemicals.

Variable-Speed Flow Control & Bidirectional Operation

The RP-SY drive system allows users to adjust pump performance by controlling both piston stroke and rotational speed. This dual adjustment capability enables continuous flow adjustment from 0–100% of rated capacity.

Because the pump is reversible, it can operate in either direction without additional valves or hardware. When paired with the R405 head, this configuration supports a highly precise flow rate range from 0 to approximately 100–200 mL/min, allowing users to scale from very low dosing rates up to robust transfer operations seamlessly.

R405 Stainless Steel Pump Head & OEM Integration

The R405 stainless steel pump head provides excellent resistance to corrosion and chemical attack. The wetted materials—including the stainless steel metering head, precision ceramic internals, and chemically resistant seals—ensure long operational life and minimal wear.

Furthermore, the 1/4-inch shaft configuration allows for easy mechanical integration into laboratory instruments, OEM analytical equipment, and pilot-plant process skids while maintaining a compact installation footprint.

Technical Specifications

• Manufacturer: Fluid Metering, Inc. (FMI)

• Pump Model: RP-SY Variable-Speed Pump Drive

• Pump Technology: Valveless Positive Displacement Piston (CeramPump design)

• Pump Head: R405 Stainless Steel Pump Head

• Shaft Size: 1/4 inch diameter

• Wetted Materials: Stainless steel head, ceramic piston/cylinder, chemical-resistant seals

• Flow Adjustment: Continuous via stroke and speed (0–100% of rated capacity)

• Flow Direction: Reversible (bidirectional)

• Flow Rate Range: Approx. 0 to 100–200 mL/min (depending on configuration)

• Operation Modes: Continuous metering or batch dispensing

Nationwide Shipping & Availability

Waiting on long OEM lead times for specialized, variable-speed metering pumps can delay 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 OEM builders nationwide.

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

Frequently Asked Questions (FAQ)

How does an FMI valveless metering pump work? FMI CeramPump technology uses a rotating and reciprocating ceramic piston to draw and dispense fluid. This design provides drift-free, highly accurate positive displacement metering without using check valves, which are prone to clogging or failure when handling aggressive chemicals.

What is the flow rate of the FMI RP-SY pump with an R405 head? Thanks to the variable-speed drive and adjustable stroke length, this pump configuration provides a continuous, highly linear flow adjustment from 0 to approximately 100–200 mL/min. Exact flow rates will depend on the fluid's characteristics, the set drive speed, and the stroke length.

Why use an R405 stainless steel pump head? The R405 stainless steel pump head provides excellent mechanical strength and superior chemical and corrosion resistance compared to standard plastic heads. Paired with ceramic internals, it is ideal for handling aggressive industrial solvents, acids, and high-purity fluids over a long service life.

Buy the Used FMI RP-SY Valveless Metering Pump

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

Contact HiTechTrader today to:

• Request pricing

• Confirm exact flow-rate configurations, motor speed, and tubing compatibility

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