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Home » Saltwater Aquarium Supplies  » Water Pump  » External  » 2000 GPH & Higher  »  Iwaki MD100RLT Water Pump (Japanese Motor)
Iwaki MD100RLT Water Pump (Japanese Motor)

Iwaki MD100RLT Water Pump (Japanese Motor)

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Iwaki MD100RLT Water Pump (Japanese Motor) Information

Product Manuals & Documentation

Magnetic water pumps. Magnetic driven. Sealess pumps for use on fresh or saltwater aquariums. Low heat exchange . 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: MD100RLT*
Inlet(MPT)/Outlet(MPT): 1"/1"
Flow Rate @ 4` Head: 2000 GPH
Max Head ft: 39.0

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.

Note: Power outlet plug NOT included.

Model Hose NPTM Output
Max Flow
Max Head
Max Sys
S.G. Weight
MD55RLT 1" 1" 1/9 3400 1.6 18.4 26.9 17.1 1.2 10
MD70RLT 1" 1" 1/4 3400 2.8 25.6 31.8 21.3 1.0 13
MD100RLT 1" 1" 1/3 3400 3.4 35.6 39.0 25.6 1.2

Performance Curve

Note - IWAKI RLT are Pressure Rated pumps designed to pump into pressure canister filters or any situation that can create back pressure. IWAKI XT models are for standard circulation such as return from wet/dry. The pressure models are also suitable for standard return.

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.

Iwaki MD100RLT Water Pump (Japanese Motor) Reviews

Average Rating
(1 reviews)
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Its an Iwaki MD199RLT

Reviewers Rating Excellent!

Posted: 10/7/2016 from WOODSTOCK, CANADA
5.0 5
Experience Level: Expert

Comments: I have had this pump for over a couple of months. Presently I am using it to do water changes on my 130 gallon fresh water discus tank which is heavily planted. I have to move the water 8 ft up and 30 ft down to wear my drain is.. I take out about 100 gallons and it does it with ease in less than 5 minutes. My system goes up down and around and the head space just handles it with ease. Very impressed. Quality construction for sure. Very quiet pump for what it does and how much water it moves. I am going to get the MD70RLT for my other tank. It is on 75 gallon tank. I only go for top quality accessories for my tank and this was an excellent buy. I will have it for years to come. Buy it and you will like it... Japanese motor is the way to go.

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