New Iwaki DC water pump

grimjaw · 12-10-2003, 09:07 PM

I was surfing around for info on a different Iwaki pump when I found these. The RD-05H is a 24VDC water pump. This pump is almost silly, its so powerful. It has Max flow rate of 6lpm and Max head of 9m. This is rated at only 17watts output. I have not found this pump any where but at Iwaki's Web Site. I wrote them for info on the pump and a list of resellers stocking it. I would love to hear peoples thoughts on this pump.

nikhsub1 · 12-10-2003, 10:40 PM

I've contacted Iwaki about a 12v version. I love the RD-20 or 30, those specs are insane.

Cathar · 12-10-2003, 11:19 PM

Quote:

Originally posted by nikhsub1
I've contacted Iwaki about a 12v version. I love the RD-20 or 30, those specs are insane.

Yes, the RD-20 has about the same performance curve as the Iwaki MD-30RZ 50Hz model (my pump), but just a 28W power draw instead of 70W.

If only they made it in 12V. I'd have one in my system in a flash.

bigben2k · 12-10-2003, 11:44 PM

Sounds an awful lot like a direct drive.

pHaestus · 12-11-2003, 12:00 AM

It should be easy to find a 1A 24VDC psu. Here's one off top of my head that would be fine for this pump:

http://www.mpja.com/productview.asp?product=15047+PS

It's under 1A if it's 17W so something unobtrusive would be no problem I'd think...

ralf_c · 12-11-2003, 12:06 AM

been watching the RD line of pumps closely my self, they seem to be perfect for cooling loops, paretically the DR 20. lets hope for a 12v version.

does any body know where to get them or the pricing?

grimjaw · 12-11-2003, 12:15 PM

I just called Iwaki and spoke to Jason. He gave me the phone number of a local reseller. I have called the reseller and they are checking on the Price for the RD-20 and RD-30. There may be a discount for buying a num ber of these. A gruop buy may be needed to get a good ( better) price. Hopefully I will hear back with in a hour or so.

murray13 · 12-11-2003, 01:06 PM

Here are the electrical specs for the RD line. Helpful for looking at power supplies.

pHaestus · 12-11-2003, 01:10 PM

Don't know where that 17-20W number came from then...

sbud · 12-11-2003, 01:15 PM

The RD-20 is $192................

BillA · 12-11-2003, 01:29 PM

how did that go ?

no free lunch

and note that a 12V version would have a startup draw of ~16A

nikhsub1 · 12-11-2003, 02:08 PM

Quote:

Originally posted by unregistered
how did that go ?

no free lunch

and note that a 12V version would have a startup draw of ~16A

Exactly right. It would have 5A draw after startup. You would need a serious PSU to run it. Even a beefy Fortron 400W only has 15A on the 12V rail.

grimjaw · 12-11-2003, 03:21 PM

ok, I just got a quote on the RD-20 24VDC of $180each for 6+ units. A little pricey...

murray13 · 12-11-2003, 06:17 PM

Have to remember how Iwaki specs pumps. Their wattage specs are for what the pump puts out not what is needed electrically. So if 'average mag drive efficency' is true that 28W output will need about 60W input. Which is about right. 24V * 2.5A = 60W

Cathar · 12-11-2003, 10:05 PM

Quote:

Originally posted by unregistered
how did that go ?

no free lunch

and note that a 12V version would have a startup draw of ~16A

Hmm, the power draw is disappointing. I don't think that anyone expected a free lunch, but with ~8-9W of actual pumping work being done, it's not like we're asking for the pump to defy the laws the physics either....

12-10-2003, 09:07 PM	#1
grimjaw Cooling Neophyte Join Date: May 2003 Location: USA Posts: 8	New Iwaki DC water pump I was surfing around for info on a different Iwaki pump when I found these. The RD-05H is a 24VDC water pump. This pump is almost silly, its so powerful. It has Max flow rate of 6lpm and Max head of 9m. This is rated at only 17watts output. I have not found this pump any where but at Iwaki's Web Site. I wrote them for info on the pump and a list of resellers stocking it. I would love to hear peoples thoughts on this pump.

12-10-2003, 10:40 PM	#2
nikhsub1 c00ling p00n Join Date: Jun 2002 Location: L.A. Posts: 758	I've contacted Iwaki about a 12v version. I love the RD-20 or 30, those specs are insane. __________________ :-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:'``':-.,_,.-: E6700 @ 3.65Ghz / P5W DH Deluxe / 2GB 667 TeamGroup / 1900XTX PC Power & Cooling Turbo 510 Deluxe Mountain Mods U2-UFO Cube Storm G5 --> MP-01 --> PA 120.3 --> 2x DDC Ultras in Series --> Custom Clear Res "Artificial intelligence is no match for natural stupidity." 1,223,460+ Ghz Folding@Home aNonForums :-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:'``':-.,_,.-:

12-10-2003, 11:44 PM	#4
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Sounds an awful lot like a direct drive. __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

12-11-2003, 12:00 AM	#5
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	It should be easy to find a 1A 24VDC psu. Here's one off top of my head that would be fine for this pump: http://www.mpja.com/productview.asp?product=15047+PS It's under 1A if it's 17W so something unobtrusive would be no problem I'd think... __________________ Getting paid like a biker with the best crank... -MF DOOM

12-11-2003, 12:06 AM	#6
ralf_c Cooling Neophyte Join Date: Aug 2003 Location: LA Posts: 61	been watching the RD line of pumps closely my self, they seem to be perfect for cooling loops, paretically the DR 20. lets hope for a 12v version. does any body know where to get them or the pricing? __________________ best regards, ralf

12-11-2003, 12:15 PM	#7
grimjaw Cooling Neophyte Join Date: May 2003 Location: USA Posts: 8	I just called Iwaki and spoke to Jason. He gave me the phone number of a local reseller. I have called the reseller and they are checking on the Price for the RD-20 and RD-30. There may be a discount for buying a num ber of these. A gruop buy may be needed to get a good ( better) price. Hopefully I will hear back with in a hour or so.

12-11-2003, 01:10 PM	#9
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	Don't know where that 17-20W number came from then... __________________ Getting paid like a biker with the best crank... -MF DOOM

12-11-2003, 01:15 PM	#10
sbud Cooling Neophyte Join Date: Sep 2003 Location: San Jose, CA Posts: 8	The RD-20 is $192................ __________________ A64 X2 4200+ @ 2.8GHz Swiftech G4 Storm \| Swiftech MCP350 \| Thermochill 120.2 DFI nF4 SLI-D 2GB 2x1GB Crucial Ballistix PC 4000 2x eVGA 7800 GTX 2x 74G Raptor \| 400G Barracuda PC P&C Turbocool-510 SLI

12-11-2003, 01:29 PM	#11
BillA CoolingWorks Tech Guy Formerly "Unregistered" Join Date: Dec 2000 Location: Posts: 2,371.493,106 Posts: 4,440	how did that go ? no free lunch and note that a 12V version would have a startup draw of ~16A

12-11-2003, 03:21 PM	#13
grimjaw Cooling Neophyte Join Date: May 2003 Location: USA Posts: 8	ok, I just got a quote on the RD-20 24VDC of $180each for 6+ units. A little pricey... Last edited by grimjaw; 12-11-2003 at 06:16 PM.

12-11-2003, 06:17 PM	#14
murray13 Cooling Savant Join Date: Sep 2002 Location: Omaha, NE USA Posts: 216	Have to remember how Iwaki specs pumps. Their wattage specs are for what the pump puts out not what is needed electrically. So if 'average mag drive efficency' is true that 28W output will need about 60W input. Which is about right. 24V * 2.5A = 60W

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