Micropump pumps - can they be used for our applications?

[Cronos]

Here is the link.
http://www.micropump.com/products/pumps/gear/index.asp

These are positive displacement compact pumps, suitable for very low fluid temperatures up to -45C (perfect for liquid chillers ). Also have very high pressure and good flow, virtually not dependent on the flow resistance.

The only thing i cant find is their power consumption. If its high, than they are useless.

[serialk11r]

Wow that is extremely high pressure...my guess is they're power hogs because of that :(

[Holst]

You could email and find out.

[Cronos]

Already found. The power consumption is probably acceptable.

As i am thinking about building low-temperature phase chiller, i am looking for good pump capable to work at -40C -50C or even lower. That is the first series of compact pumps i have found rated for -46C.

[Lekko]

I wonder what the internal components are made out of. Hopefully you don't have to worry about mixed metals.

[NaeKuh]

SERIES GN 22.7 L/min
(6 gpm) 42 L/min
(11.1 gpm) 6.9 bar
(100 psi) 103 bar
(1500 psi) 24.5 ml/rev


ROFL..... that looks really strong.. 100psi!?!?!??!


I wonder what the internal components are made out of. Hopefully you don't have to worry about mixed metals.

Pump Construction
Magnetic Drive Gear Pump
Cavity Style
Three Helical, Shafted Gears
Sleeve Bushings
O-ring Seals

Wetted Materials
Base Materials
316 Stainless Steel
Alloy 20
Titanium
Hastelloy C-276®
Hastelloy B-2®
Gears
PEEK
PTFE
Static Seals
Viton®
EP
Buna N
Kalrez®
TEV
Magnets
Driven & Driving
Rare Earth


Looks okey, i dont see anything that would cause a problem. However im seeing Ti, so im guessing this is uber expensive. :X


ummm im also starting to think this thing might dump a crap load of heat into your water as well. :T

[grudgelord]

If that Ti is exposed to flow then you might want to check the potential for galvanic response. I know that titanium and aluminum do not get along at all (much worse than copper -> aluminum if I'm not mistaken).

I don't believe that Ti -> Cu presents a significant potential for galvanic reaction, though it would be wise to investigate.

Edit: Just noticed NaeKuh's post that lists the Ti as a wetted material. So yea, check out the reactions.

[serialk11r]

Exactly what I said. 100psi is INSANE. 100psi translates to several hundred feet of head.

[Sparky]

looks really interesting! Once you find something out report back. It might be a good alternative to the DDC if the reliability is better and the price and performance is right.

[serialk11r]

I have a feeling these are very very expensive.

[Sparky]

I have a feeling these are very very expensive.

So do I, unfortunately. They look like they wouldn't be cheap. I'm guessing mid-$100's.

[SNiiPE_DoGG]

Tooo bad for you guys you're going to have to use high pressure hose to contain this kind of pump... Tygon or PVC will not work.

I believe the tygon 3603 is rated for 38 psi and the highest psi tygon is at most 50-ish.

it was a cool idea, though, not so cool under pressure ;)

it could work if you used 3/4 tubing lol to reduce pressure

[Cronos]

Those 100psi is a maximum head pressure the pump (some versions, not all of them) can sustain. If the flow resistance is lower, the pressure will be lower.

The pressure can be as low as required. 10psi or 20psi, and still at several gpm.

[WonderSausage]

Tooo bad for you guys you're going to have to use high pressure hose to contain this kind of pump... Tygon or PVC will not work.

I believe the tygon 3603 is rated for 38 psi and the highest psi tygon is at most 50-ish.


I think that's burst pressure for the Tygon, which it wouldn't reach unless you were using really tight compression-style fittings. Tygon is so soft, it leaks like crazy at moderate pressure with any kind of hose clamp/barb setup (especially with worm-drive clamps). I hate Tygon

WS

[J-Mag]

Looks totally impractical. Anyone know what kind of noise level they create?

[Petra]

Tygon is so soft, it leaks like crazy at moderate pressure with any kind of hose clamp/barb setup (especially with worm-drive clamps). I hate Tygon
:eh:

*looks over at RD-30 (14.3psig max) on 1/2" Tygon R-3603 and worm-drive clamps* I've never had issues with that combination...

[SiGfever]

:eh:

*looks over at RD-30 (14.3psig max) on 1/2" Tygon R-3603 and worm-drive clamps* I've never had issues with that combination...
Don't tease us Alex. :slapass: :nono: :D

[Grinch]

:eh:

*looks over at RD-30 (14.3psig max) on 1/2" Tygon R-3603 and worm-drive clamps* I've never had issues with that combination...


:( I want to look over at an RD30...:slapass:

:toast: :clap: :woot: :)

[nikhsub1]

PD pumps are insane, they push the same GPH no matter the restriction... the key is not having too much pressure as you will bust your rads in quick order.

[nikhsub1]

:( I want to look over at an RD30...:slapass:

:toast: :clap: :woot: :)
RD-30 in action :D

http://www.anonforums.com/builds/rd30/stream/shoot3.jpg

[Kurz]

Put down the HOSE!
Seessh your potency is amazing we get it already.

[halo112358]

Tooo bad for you guys you're going to have to use high pressure hose to contain this kind of pump... Tygon or PVC will not work.

I believe the tygon 3603 is rated for 38 psi and the highest psi tygon is at most 50-ish.

it was a cool idea, though, not so cool under pressure ;)

it could work if you used 3/4 tubing lol to reduce pressure

I was just going to mention that ;) There's reinforced 22xx series tubing, but you're looking at ~$5-6 per foot.

[Grinch]

RD-30 in action :D

http://www.anonforums.com/builds/rd30/stream/shoot3.jpg

that's FU$%ED up....I want flow like that....damn tease!:slapass: :toast: :woot: :clap:

[p8ntslinger676]

RD-30 in action :D

http://www.anonforums.com/builds/rd30/stream/shoot3.jpg

now i need some rd-30's:(

[the highlander]

I wonder what the internal components are made out of. Hopefully you don't have to worry about mixed metals.

Why are people SO WORRIED ABOUT THIS?????

I have said it many times.... please either screw on or solder a piece of zinc on ANY OF THE METAL SURFACES... this WILL avoid the corrosion of the alu and copper. The ZINC WILL corrode, but not your trusted cooling parts.

[nikhsub1]

Why are people SO WORRIED ABOUT THIS?????

I have said it many times.... please either screw on or solder a piece of zinc on ANY OF THE METAL SURFACES... this WILL avoid the corrosion of the alu and copper. The ZINC WILL corrode, but not your trusted cooling parts.
Sigh, in theory a sacrificial anode (magnesium would actually be best) would be great, however with corrosion in the loop you get PARTICULATES or solid matter now roaming around the loop. I don't know about you but I don't want any solids in MY loop.

[speed bump]

just in case you want to know

Ft head = PSI*144/62.4

Looking at those pumps you need an external motor to drive them and the free flow is so low that it wouldn't really be worth using.