Iwaki WMD20RLT Water Pump - (American Motor)

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Iwaki Magnetic water pumps. Magnetic driven. Sealess pumps for use on fresh or saltwater aquariums. Low heat exchange and quiet in operation. Highly durable design. WMD pumps have American Made Motors. MD pumps have Japanese Made Motors. RLT pumps are for pressure applications. RLXT pumps are for circulation and wet/dry return.

Iwaki Walchem magnetic drive pumps will run longer, quieter and cooler than any traditional mag drive. Extraordinarily high efficiencies make WMD & MD the clear choice in almost every process, recirculation or transfer application.

Unique internal Cooling Circuit
Creates a positive, forced cooling path, lubricating bearing surfaces and actively purging gases & heat. Unique double bearing system allows cooling circuit liquid to continually "wash" front and rear radial bearings, extending bearing life.

Precision Tolerances
Pumps can be supplied with alumina ceramic or SiC spindles, bored, turned and highly polished. This precision machined spindle forms the center of the driven magnet. Substantially reduced hydraulic noise is a major feature of all WMD/MD impellers. Great pains are taken in the molding/finishing process to eliminate tangential misalignment.

Bearings/Thrust surfaces
High lubricity fluoropolymer bearings minimize mechanical losses typical of conventional mag drive pumps. High purity SiC radial bearings handle the most aggressive ultrapure chemistries. PTFE front thrust surface aids hydraulic balance and minimizes flashing. Large rear thrust surface guards against axial forces caused by cavitation or gas entrapment.

Drive magnet
Dynamically balanced barium ferrite drive magnets provide best magnet torque. Die cast magnet carrier creates a flywheel effect, which adds to the magnet safety factor.

Motor matching
Offering more standard motor/pump configurations than other manufacturers offer for tailored pump applications. Premium, high efficiency motors are used throughout the line. Totally enclosed, permanent split capacitor motors are compact, cool and economical. Tolerance to voltage variation without overheating and 50/60 Hz operation allow the product to be used in a worldwide market.

Model: WMD20RLT*
Inlet(MPT)/Outlet(MPT): 3/4"/3/4"
Flow Rate @ 4` Head: 420 GPH
Max Head ft: 14.1

In the unlikely event there are any problems with Iwaki water pumps or warranty work is needed at some point, please contact Iwaki directly at 508.429.1440 for an RGA. Do NOT send a pump back to Iwaki without an RGA number. Please contact us for any assistance you may need in this unlikely situation.

Product Manuals & Documentation

Iwaki WMD20RLT Water Pump - (American Motor)

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

Iwaki America Inc.
Iwaki America Inc. of Holliston, Massachusetts, is a joint venture which grew from a 15 year association between Walchem Corp. of Holliston, MA and Iwaki Co. Ltd. of Tokyo, Japan. Combining Walchem`s 30 years of chemical injection and control experience with Iwaki`s 50 years of pump design engineering, Iwaki America offers the best chemical handling equipment for use in Process, O.E.M., Industrial and Semiconductor applications. Iwaki America, along with Walchem Corporation and Terracon Corporation comprise the Walchem Group.

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Overall, others give this:

  • 4.5

25 Reviewers (100%) would recommend this

Overall Rating:

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“Quiet pump”
4
4.0
This is indeed a very quiet pump and it runs without much heat production. I will be ordering a few more of these to replace similar but not Iwaki pumps in the future.
  • 1
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“it works well”
5
5.0
works well.how long is the ?.it dos not make a lot of noise.my fish are happy.thank you.
  • 1
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“Iwaki pump”
5
5.0
I went with iwaki pump because it's the same one I had for 20years!!, I didn't want to re plumb the system with a Different brand.the bearings were making a lot of noise, so I replaced it. Now I have a spare but don't think I'll need it as I'm sure the new one will go 20 years also!! The only pump ...Read More
  • 1
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“Iwaki WMD Water Pump”
5
5.0
Iwaki says it all. Great pumps. performs and its quiet.
  • 1
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“Magnetic Drive Water Pump”
5
5.0
This is the second one I have owned for a 1000g pond. The first one lasted 10 years of non-stop operation through all seasons . . . and it quit because it ran dry when the pond filter became clogged. A very impressive unit!
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“First time Iwaki owner”
5
5.0
I have used Little Giant in the past to run my canister filter and was happy with them. This Iwaki seems to be a great alternative, its quiet, provides good power and runs cool.
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“Quite”
4
4.0
This pump Is very quiet and very easy to install. On a scale of 1 too 10 I give it A 8 plus.
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Overall, others give this:

  • 4.5

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