Iwaki NRD-08TV24 Seal-less Centrifugal Pump – 2.1 GPM, 24V DC
The Iwaki NRD-08TV24 is a compact, direct-drive centrifugal pump built for applications where reliability and quiet operation matter as much as performance. Instead of relying on a traditional shaft seal, this pump uses a canned-motor, magnetic-drive design, meaning the impeller is turned by magnetic force rather than a mechanical connection through the pump housing. That single design choice eliminates one of the most common failure points in fluid handling equipment, since there's no seal to wear out, dry out, or leak over time. Running on 24V DC power and delivering up to 2.1 GPM, it's engineered to fit into tight spaces without sacrificing flow performance.
What makes this pump stand out is how much thought went into long-term durability and everyday usability. A dual-bearing system keeps heat generation low, which helps sensitive systems hold a steady temperature instead of drifting as the pump warms up. The chemically resistant GFRPPE housing and GFRPP impeller, paired with an alumina ceramic spindle and PTFE bearing, allow the pump to handle demanding fluids and temperatures up to 80°C without breaking down prematurely. Iwaki backs this up with an expected service life beyond 25,000 hours, so it's built to be installed once and largely forgotten.
Because flow can be adjusted through a simple 1-5 VDC control signal, the NRD-08TV24 adapts easily to systems that need variable output rather than a fixed rate. Combined with sound levels of 40 dB or lower, it's just as comfortable running in a quiet lab or medical device as it is inside industrial equipment where noise and vibration are a concern. It's a pump that quietly does its job, which is really the whole point.
Key Features
- Seal-less, canned-motor centrifugal design eliminates leak-prone mechanical seals
- Brushless DC motor for long service life and low maintenance
- Dual bearing system reduces heat buildup and stabilizes fluid temperature
- Variable flow control via 1-5 VDC input signal
- Whisper-quiet operation at 40 dB or lower
- Compact, lightweight footprint with multiple mounting configurations
- Rated for continuous use exceeding 25,000 hours
- Built to ISO 9001/14001 manufacturing standards
Applications
- Medical equipment cooling and patient temperature management
- Biochemical and physical/chemical analyzers
- Fuel cell cogeneration cooling and circulation
- Photo and X-ray film developing machines
- Semiconductor manufacturing and cooling systems
- Small plating and surface treatment machines
- Solar water heater and solar battery heat collection systems
- Vending machine fluid dispensers
- Pure water equipment and thermostatic control systems
Specifications
- Part Number: NRD-08TV24
- Pump Type: Direct drive, seal-less centrifugal (canned motor)
- Flow Rate: Up to 2.1 GPM (7.9 LPM)
- Maximum Head: Up to 37.7 feet
- Voltage: 24V DC
- Motor Power: 22 Watts
- Control Signal: 1-5 VDC flow adjustment
- Port Size: 0.55" (14mm) hose barb suction, 0.32" (8mm) hose barb discharge
- Casing Material: GFRPPE (glass-fiber reinforced PPE)
- Impeller Material: GFRPP (glass-fiber reinforced polypropylene)
- Spindle: Alumina ceramic
- Bearing: PTFE (Teflon)
- O-Ring: FKM (Viton)
- Sound Level: 40 dB or lower
- Max Ambient Temperature: 50°C
- Max Fluid Temperature: 80°C
- Expected Service Life: 25,000+ hours
Frequently Asked Questions
Q: Can the Iwaki NRD-08TV24 self-prime?
No, this pump is not capable of self-priming. It must be primed with liquid before startup, since running it dry causes friction heat that can permanently damage internal components.
Q: What voltage input does the pump need to adjust flow?
Flow is adjusted using a 1-5 VDC external control signal. Without this signal connected, the pump defaults to running at maximum speed.
Q: Is this pump suitable for corrosive or chemically sensitive fluids?
Yes, its GFRPPE casing, GFRPP impeller, and FKM O-rings are chosen for chemical resistance, and the seal-less design avoids the leak risks that come with handling aggressive fluids.
Q: How much noise does the NRD-08TV24 produce during operation?
It operates at 40 dB or lower, making it suitable for noise-sensitive environments like medical devices and lab instrumentation.
Q: How long can this pump run before it needs to be replaced?
Under normal operating conditions, the NRD-08TV24 is rated to exceed 25,000 hours of service life, thanks to its brushless motor and dual-bearing design.
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