Quick Disconnects: Koolance VL3 Series

**Hondacity** · 03-16-2009, 01:02 PM

They just arrived fresh from their washington office.

Without QDC

With one set of QDC(male+female)

With two sets of QDC(male+female)

enjoy

**Big Myke** · 03-16-2009, 01:04 PM

I love my CPC 1/2'' quick disconnects. have you got any of those laying around to test?

**Hondacity** · 03-16-2009, 01:08 PM

sadly nope...wish i had some...to test..and if they're really good.i'll keep em

**Eddie3dfx** · 03-16-2009, 01:13 PM

I'm going to be solely using these as a drain-fillport.

**Sadasius** · 03-16-2009, 01:33 PM

Glad I kept those out of my loop. Was planning on using them at first but once I looked at it closely I put them in a box and kept them there. Could be useful as drain and fill ports but too much of a flow killer for anything else.

**MrToad** · 03-16-2009, 01:58 PM

Please excuse my ignorance but... What's the unit of measure?

**Vapor** · 03-16-2009, 01:59 PM

GPM on the left, l/min on the right.

Nice quick test there

Mirrors my findings too, which makes me feel good

**Nickel020** · 03-16-2009, 02:03 PM

Should be GPM.

I have the Koolance VL3, the CPC for 3/8" ID (APC series?) and the 1/2" CPC NS6 series lying here. The Koolance are noticeably better than the 3/8" CPCs, but the 1/2" CPCs have a completely different construction, and I haven't tested those yet.

I'm gonna publish results flow for all of them once I get my proper rotameter, I currently have a Digmesa FHKUC but I noticed that the absolute value is not correct, and I'm not sure whether the relative values are correct either.

**Hondacity** · 03-16-2009, 02:09 PM

Originally Posted by Vapor

GPM on the left, l/min on the right.

Nice quick test there

Mirrors my findings too, which makes me feel good

gooood to know

...it works ok with two pumps

**HESmelaugh** · 03-16-2009, 02:15 PM

Thanks for testing!
I hope you get a chance to compare them to some CPC QDs, I'd love to see a comparison.

Let's see how's first, you or Nickel020.

**MrToad** · 03-16-2009, 02:22 PM

Originally Posted by Vapor

GPM on the left, l/min on the right.

Nice quick test there

Mirrors my findings too, which makes me feel good

Thanks

Got my wires crossed and though it was pressure, not flow LOL. No wonder I couldn't make sense of it...

0.25 GPM per pair it's a hell of a drop though... blimey!

**Hondacity** · 03-16-2009, 02:23 PM

Originally Posted by HESmelaugh

Thanks for testing!
I hope you get a chance to compare them to some CPC QDs, I'd love to see a comparison.

Let's see how's first, you or Nickel020.

i don't drive fast nor race, i cruise

**ecidious** · 03-16-2009, 02:45 PM

If anyone is going to do a full comparison they should toss the VL4's into the running too

**Nickel020** · 03-16-2009, 02:54 PM

Originally Posted by Hondacity

i don't drive fast nor race, i cruise

So do I, and I won't be rushed

I can tell you tha using the FHKUC I measured 250 l/h for the Koolance and and 200 l/h for the CPC 3/8". I use the Koolance with a female-to-female G1/4 adapter so I can use any barb.
I don't trust the FHKUC fully though, I did some manual testing with a stopwatch and I found that while it showed a flowrate of about 178l/h I actually was getting more than 200 l/h (different pump and loop setup for this test). That's why I ordered a rotameter (swiss made

) and when I get that and find some time I'll do a 1/2" tubing comparison with thebig NS6 CPCs.

**Froggy** · 03-16-2009, 02:54 PM

Those are the 3/8" ID right?

**Nickel020** · 03-16-2009, 03:00 PM

Yes, they're a little more restrictive than 3/8" tubing though of course due to the shutoff mechanism.

Also, nothing beats the CPC NS6 1/2" shutoff mechanism, no water coming out at all when you open them

**hotdun** · 03-16-2009, 03:04 PM

Originally Posted by Hondacity

sadly nope...wish i had some...to test..and if they're really good.i'll keep em

I have a ton and you could borrow whatever you needed for testing.

**NaeKuh** · 03-16-2009, 03:46 PM

Originally Posted by Nickel020

The Koolance are noticeably better than the 3/8" CPCs, but the 1/2" CPCs have a completely different construction, and I haven't tested those yet.

CPC's also come in 3/4

There big and ugly tho.

I have 6 unused right here.

**DeanB** · 03-16-2009, 03:58 PM

Also keep in mind... if you'rel ooking for ultimate flowrate then these are the "mid-range"

Here's a list of all our shut-off valves and their flow-through ID

**NaeKuh** · 03-16-2009, 04:00 PM

Dean i really wish you guys would make the VL4 with G1/4 threads so i can retire my VL3's.

**faster3200** · 03-16-2009, 04:17 PM

Originally Posted by NaeKuh

Dean i really wish you guys would make the VL4 with G1/4 threads so i can retire my VL3's.

QFT

. I think I remember hearing that they were being made, but I guess you would know better than I do.

**Nickel020** · 03-16-2009, 04:19 PM

I don't understand that either. Why make them with different compression fittings and barbs attached to them, but not with a female G1/4 thread. That's the single biggest complain about the CPCs (not being able to use any barb you want) and it would be so easy to fix it for Koolance