Iwaki MD-70RLT-115 Magnetic Drive Polypropylene Pump, 115V
The Iwaki MD-70RLT-115 is a compact, sealless magnetic drive pump built for anyone who needs dependable fluid transfer without the maintenance headaches of a traditional shaft-seal pump. Its glass-fiber reinforced polypropylene housing shrugs off corrosive chemicals, saltwater, and everyday process fluids, while the rotating ceramic spindle and PTFE bearings keep things running smoothly with very little wear over time. Because the motor and pump chamber are magnetically coupled rather than mechanically linked, there's no seal to leak or replace, which means less downtime and fewer surprises down the road.
Powered by a 1/4 HP, 115V TEFC motor spinning at 3400 RPM, this pump strikes a nice balance between output and quiet operation. It's equally at home moving chemicals in an industrial process line, circulating water through a filtration or cooling loop, or handling demanding aquatic and reef system transfer duties. The 1-inch NPT threaded ports make plumbing straightforward, and the twin-bearing design helps the pump absorb thrust loads that would wear down lesser units faster.
What really sets this pump apart is how much thought went into reducing friction points, both literal and figurative. The hollow rotating spindle helps circulate fluid internally to cool the bearings, the housing resists a wide range of chemicals, and the whole assembly is engineered to tolerate voltage fluctuations without overheating. For anyone comparing sealless pumps in this horsepower range, the MD-70RLT-115 consistently comes up as a smart, low-maintenance choice.
Key Features:
- Sealless magnetic drive design eliminates leak-prone mechanical seals
- GFRPP (glass-fiber reinforced polypropylene) casing and impeller for strong chemical resistance
- Rotating ceramic spindle with PTFE (Teflon) impeller-to-shaft bearing
- Alumina ceramic thrust ring for extended bearing life
- Twin bearing system manages thrust loads for longer service life
- Hollow rotating spindle provides internal cooling to reduce bearing temperature
- TEFC (Totally Enclosed Fan Cooled) motor for durability in varied environments
- Quiet, energy-efficient operation with tolerance to voltage variation
Applications:
- Chemical transfer and process fluid handling
- Industrial recirculation and cooling loops
- Laser, chiller, and blood analyzer equipment
- Reef and aquarium external filtration and return systems
- General-purpose water transfer where corrosion resistance matters
Specifications:
- Model/Part Number: MD-70RLT-115
- Motor Output: 1/4 HP
- Voltage: 115V AC, single phase, 50/60 Hz
- Motor Speed: 3400 RPM
- Max Amps: 2.8A
- Max Flow: 25.6 GPM (1,536 GPH)
- Flow at 6 ft Head: 1,440 GPH
- Max Head: 31.8 ft
- Max System Pressure: 21.33 psi
- Port Size: 1" NPT (inlet and outlet)
- Housing Material: GFRPP polypropylene
- Bearing Material: PTFE with alumina ceramic thrust ring
- Shaft Seal: Sealless (mag drive); FPM/FKM Viton body O-ring, EPDM optional
- Motor Enclosure: TEFC
Frequently Asked Questions
Q: Does the Iwaki MD-70RLT-115 come with a power cord plug attached?
A: No, Iwaki MD series pumps ship with an unspliced power cord, so the plug is not pre-installed.
Q: Can the MD-70RLT-115 be used with saltwater or aggressive chemicals?
A: Yes, its GFRPP polypropylene housing and ceramic/PTFE wetted components make it well-suited for saltwater, many chemicals, and corrosive fluids, though compatibility should be confirmed for specific chemistries.
Q: What is the maximum specific gravity this pump can handle?
A: The MD-70RLT-115 is rated for fluids with a specific gravity limit of 1.0.
Q: How is this pump different from the MD-70RLZT-115?
A: The MD-70RLT-115 uses a standard flow impeller with 1" NPT ports and a 1/4 HP motor, while the MD-70RLZT-115 uses a high-head impeller, 3/4" NPT ports, and a higher-output 2/7 HP motor.
Q: Is this pump suitable for continuous duty operation?
A: Yes, the TEFC motor and internally cooled spindle design are built to support continuous operation in recirculation and process applications.
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