Iwaki RD-12TV24-NIV12 Seal-less Centrifugal Pump
The Iwaki RD-12TV24-NIV12 is a compact, direct drive centrifugal pump built around a small canned motor design. Instead of relying on traditional mechanical seals, it uses a brushless DC motor that magnetically drives the impeller, keeping the motor and wetted parts completely separated. This makes it an easy fit for equipment builders who need a leak-resistant pump that runs quietly and holds up over long duty cycles, whether it's tucked into a benchtop instrument or built into a larger OEM system.
Construction-wise, the pump pairs a glass-fiber reinforced resin casing and impeller with an alumina ceramic spindle and PTFE bearing, giving it strong resistance to chemically aggressive fluids without adding bulk. A dual bearing arrangement helps manage internal heat, so the pump can keep pace even when it's asked to run continuously in warmer environments. It's rated to handle ambient temperatures up to 50°C and fluid temperatures as high as 80°C, which opens the door to uses well beyond typical bench applications, including thermostatic baths, cooling loops for laser or analytical equipment, and small-scale fluid transfer in demineralizers.
What tends to stand out to engineers and lab technicians alike is how much control this small pump offers. The 1–5VDC input signal lets users dial in flow rate rather than running the pump at a single fixed speed, which is handy for calibration work or systems that need to adjust output on the fly. Built under ISO 9001/14001 manufacturing standards and rated for a long operating life, the RD-12TV24-NIV12 is designed to be a dependable, low-maintenance component that quietly does its job inside a larger piece of equipment.
Key Features
- Seal-less, direct drive canned motor design eliminates leak-prone mechanical seals
- Brushless 24VDC motor for quiet, efficient operation
- 1–5VDC input signal allows adjustable flow control
- Dual bearing system reduces heat buildup and supports temperature stability
- Compact, lightweight housing suited for integration into OEM equipment
- Chemically inert wetted materials extend service life in demanding fluids
- Manufactured under ISO 9001/14001 quality standards
Applications
- Laboratory and biochemical analyzers
- Thermostatic and temperature-controlled devices
- Cooling systems for laser and analytical instruments
- Demineralizers and small-scale fluid circulation systems
- Medical and diagnostic equipment
- General OEM fluid handling where compact size and quiet operation matter
Specifications
- Port size: 3/8" NPT male suction x 3/8" NPT male discharge
- Flow rate: Up to 3.4 GPM
- Maximum head: Up to 22.3 feet
- Voltage: 24VDC
- Power consumption: 12 Watts
- Flow control signal: 1–5VDC input
- Casing material: GFRPPE (glass-fiber reinforced polyphenyl ether)
- Impeller material: Glass-fiber reinforced PPS
- Shaft/spindle: Alumina ceramic
- Bearing: PTFE (Teflon)
- O-ring: FKM (Viton)
- Ambient temperature rating: Up to 50°C
- Maximum fluid temperature: 80°C
- Priming: Not self-priming; requires pre-priming before operation
FAQ Section
Q: Is the Iwaki RD-12TV24-NIV12 self-priming?
A: No, this pump is not self-priming. It needs to be primed with liquid before startup, since running it dry can cause excessive friction heat and permanent damage to internal components.
Q: Can the flow rate be adjusted on this pump?
A: Yes. The pump accepts a 1–5VDC input signal, which allows the flow rate to be adjusted rather than running at a single fixed output.
Q: What fluid temperatures can this pump handle?
A: The RD-12TV24-NIV12 can handle fluid temperatures up to 80°C, making it suitable for warm-liquid applications like thermostatic devices and cooling systems.
Q: What makes this a "seal-less" pump?
A: The pump uses a canned motor design where a magnetic coupling drives the impeller without a mechanical shaft seal, reducing the risk of leaks compared to traditional seal-based pumps.
Q: How long can this pump typically operate before servicing is needed?
A: Under normal operating conditions, the pump is designed to typically exceed 25,000 hours of service life due to its chemically inert construction and dual bearing system.
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