Iwaki L-MD-70RZ Liquid End Mag-Drive Pump Head
The Iwaki L-MD-70RZ is a replacement liquid end for the popular MD-70RZ series of magnetic drive centrifugal pumps. Because the magnetic coupling keeps the motor completely separated from the wetted parts, there's no mechanical shaft seal to wear out or leak, which makes this pumphead a dependable choice for anyone who needs quiet, drip-free fluid handling. It's built to bolt right onto an existing MD-70RZ motor assembly, so if your current pump casing has cracked, clouded, or simply worn out over time, this liquid end brings it back to full working condition without replacing the whole unit.
Constructed from rugged, chemically resistant polypropylene with a durable impeller and bearing assembly, the L-MD-70RZ liquid end is suited to a wide range of settings beyond typical industrial plumbing. Laboratories, medical device manufacturers, and equipment builders working on blood analyzers, laser systems, and chiller loops all rely on this style of compact mag-drive pump head for its small footprint and consistent, low-noise performance. The 3/4 inch hose barb connection makes installation straightforward for anyone already familiar with the MD/WMD pump family.
Whether you're maintaining an existing recirculation system or building a new fluid transfer setup, the L-MD-70RZ offers the reliability Iwaki pumps are known for in a compact, easy-to-service package. Its seal-less design reduces long-term maintenance needs, and its non-metallic construction resists a broad range of process liquids, making it a practical option for both routine replacement and new equipment design.
Key Features
- Seal-less magnetic drive design eliminates shaft seal leaks
- Durable polypropylene (GFRPP/CFRPP) construction resists corrosion
- Compact, low-noise operation suited for tight installations
- Direct-fit replacement liquid end for MD-70RZ series pumps
- PPS bearing and FKM O-ring for reliable, long-term operation
Applications
- Laboratory fluid recirculation and transfer
- Chiller and cooling loop systems
- Laser system fluid circulation
- Blood analyzer and medical device fluid handling
- General chemical and process liquid transfer
Specifications
- Port Size: 3/4 inch hose barb connection
- Construction: GFRPP/CFRPP polypropylene body and impeller
- Bearing Material: PPS
- Seal: FKM O-ring
- Compatibility: Iwaki MD-70RZ series pump motor assemblies
Frequently Asked Questions
Q: Does the L-MD-70RZ include the motor?
A: No, this is the liquid end (pumphead) only and is designed to mount onto an existing compatible MD-70RZ motor assembly.
Q: What port connection does the L-MD-70RZ use?
A: It uses a 3/4 inch hose barb connection for tubing attachment.
Q: Is this liquid end compatible with other MD series models?
A: It is specifically designed for the MD-70RZ series; other models in the MD/WMD line use different liquid end part numbers.
Q: Why choose a magnetic drive liquid end over a traditional seal design?
A: The magnetic coupling removes the mechanical shaft seal, reducing the risk of leaks and lowering long-term maintenance requirements.
Q: Can this pump head handle chemical or aggressive liquids?
A: Its polypropylene construction offers good chemical resistance, though compatibility should always be checked against the specific fluid being used.
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