Eheim 1250 and 3/8 tubing

Nomad2000 · 07-10-2002, 07:42 AM

An Eheim 1250 comes with 1/2" barbs but I want to use 3/8" tubing. Could somebody manade to fit 3/8 tygon tubing on 1/2 barbs (just for an Eheim 1250)? Or I need an adapter?
Thank everybody.

gmat · 07-10-2002, 08:12 AM

Tygon or silicon should strech enough.

bigben2k · 07-10-2002, 08:53 AM

Most people here that have tried it report that it's very hard to do, but that it is possible.

Nomad2000 · 07-10-2002, 10:07 AM

The problem is - I believed a paper. It says that both barbs are 1/2. But actually only outlet is 1/2"=1.27cm. Inlet is 1.36cm and I cannot fit my 3/8". Maybe to warm the tubing?
Thank you everybode

ECUPirate · 07-10-2002, 10:58 AM

yeah, one of the barbs is really large... It stretches the 1/2 a good bit. Me thinks 3/8" would be a real biatch.

redleader · 07-10-2002, 12:34 PM

The 1250 has threads on it, so you could just buy a 3/8 barb and add it.

Or have a few inches of 1/2 and then a reducer.

MeltMan · 07-10-2002, 12:44 PM

Just a quick q, is the 1060 and 1048 threaded as well? Ive been wanting to upgrade, but not the tubing size...

Thanks

airspirit · 07-10-2002, 03:32 PM

Go to your local hardware store and get nylon 3/8 to 1/2 hose fittings and a couple of clamps. Add 1 ft of 1/2 hose for spacers and you're gold. It might help water feed through the pump (lowering it an equal amt in resistance on the other end) and prevent internal turbulence (which lowers flow and raises heat).

bigben2k · 07-10-2002, 03:37 PM

Just as a side note, I think it'd be better tu use 1/2" tubing, with an Eheim 1250. What's the limitation here?

gmat · 07-10-2002, 03:46 PM

MeltMan: all eheim pumps are threaded and use adaptors to connect hose.
The stock 1048 comes by default with 2x 1/2"
The 1250 with 1x1/2" and 1x3/4"
I don't know for the 1060 (go check eheim.de

)
All are perfectly leak proof thanx to o-rings (for Eheim parts, for that matter) so swapping connectors is child's play.

redleader · 07-11-2002, 10:25 AM

Quote:

The 1250 with 1x1/2" and 1x3/4"

I'm not so sure about that. I carried it in and tried to get a fitting for the larger end with no luck at my local plumbing supplys distributer. Its definately less then 3/4, you can slide a 3/4 inch fitting right over it. My guess is 5/8, but I've never seen a 5/8 inch PVC fitting.

Ozzie · 07-11-2002, 10:33 AM

Tygon or silicon stretches fairly easy if you put the end of the hose in hot water...but you have to hurry and it is very pliable...

MeltMan · 07-11-2002, 10:50 AM

Thanks Gmat, I think i will be upgrading and giving the Rio1400 to my little brother.

Im tired of listening to his "hairdryer" sounding delta 60

Nomad2000 · 07-11-2002, 12:21 PM

I fitted tygon 1/2 on inlet of Eheim 1250. Can say - it was difficult enough.

gmat · 07-11-2002, 12:23 PM

Remember these are German products. Like everyone around the world they use metric units... The 1250 has 1x12mm and 1x16mm connectors.

(edit)
I just checked Eheim site.
1048: 2x13mm (they're a tad bigger, because of the conical shape) thats about 1/2"
1250: 1x13mm + 1x17mm (that would be 1/2" and 3/4")
1060: 1x18mm + 1x28mm

dacooltech · 07-11-2002, 01:03 PM

Nomad2000 - For the suction side of the Eheim 1250, you need a 1/2"NPT (thread size) to 1/2" (tube size) fitting. This one here:
http://www.cooltechnica.com/Merchant...egory_Code=TAA
make sure you use teflon tape, because it doesn't have O-Ring like the original ones.

Tygon R-3603 is not as flexible as silicone, because it's still PVC based tubing. But like suggested earlier the hot water trick works.

Bruce

www.cooltechnica.com

bdunosk · 07-11-2002, 08:12 PM

It will, with 3/8" silicon tubing. I did it. Use hose clamps, as always... also realize that it will at least temporarily (more likely permanently) stretch the ends of the tubing.

If you put non-metric fittings on, they will not be perfect. I used teflon tape and used goop around the junction of the barb and pump. I'm not sure how this would work for the outlet barb, since it's somewhat recessed. This was all on a 1250, btw.

Nomad2000 · 07-12-2002, 03:32 AM

I have tygon with thick walls - it is softer. For 1250 I could fit 3/8 - outlet and 1/2 - inlet.

ksw · 07-13-2002, 04:50 PM

ehm. a little thaugh.
eheim 1250 + 3/8 size tubing = not a good idea.
id rather go for 1/2 inner diameter and hoseclamps on it.

07-10-2002, 07:42 AM	#1
Nomad2000 Cooling Neophyte Join Date: Apr 2002 Posts: 56	Eheim 1250 and 3/8 tubing An Eheim 1250 comes with 1/2" barbs but I want to use 3/8" tubing. Could somebody manade to fit 3/8 tygon tubing on 1/2 barbs (just for an Eheim 1250)? Or I need an adapter? Thank everybody.

07-10-2002, 08:53 AM	#3
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Most people here that have tried it report that it's very hard to do, but that it is possible. __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

07-10-2002, 10:58 AM	#5
ECUPirate Hottest Stank of them All Join Date: Mar 2002 Location: Washington, DC area Posts: 533	yeah, one of the barbs is really large... It stretches the 1/2 a good bit. Me thinks 3/8" would be a real biatch. __________________ Does a radioactive cat have 18 half lifes? --Kenny my pimpin' rig: ...previously poorly cooled... 486DX-2 66mhz @ 75mhz, 4Mb ram, shared, 256Mb hard drive Onboard VGA, watercooled, of course 16-color monitor, labtec speakers, 28kbs USRobotics modem Windows XP (think about it) Maze 3, DDen GF3 block, Eheim 1250, econoline van HC, 1/2" hose w/ 5/8" fittings Comair 172mm fan

07-10-2002, 12:44 PM	#7
MeltMan Cooling Savant Join Date: Aug 2001 Location: KS Posts: 374	Just a quick q, is the 1060 and 1048 threaded as well? Ive been wanting to upgrade, but not the tubing size... Thanks __________________ MeltMan Lurker Supreme!

07-10-2002, 03:37 PM	#9
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Just as a side note, I think it'd be better tu use 1/2" tubing, with an Eheim 1250. What's the limitation here? __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

07-10-2002, 08:12 AM	#2
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	Tygon or silicon should strech enough.

07-10-2002, 10:07 AM	#4
Nomad2000 Cooling Neophyte Join Date: Apr 2002 Posts: 56	The problem is - I believed a paper. It says that both barbs are 1/2. But actually only outlet is 1/2"=1.27cm. Inlet is 1.36cm and I cannot fit my 3/8". Maybe to warm the tubing? Thank you everybode

07-10-2002, 12:34 PM	#6
redleader Thermophile Join Date: Jun 2001 Location: The deserts of Tucson, Az Posts: 1,264	The 1250 has threads on it, so you could just buy a 3/8 barb and add it. Or have a few inches of 1/2 and then a reducer.

07-10-2002, 03:32 PM	#8
airspirit Been /.'d... have you? Join Date: Jul 2002 Location: Moscow, ID Posts: 1,986	Go to your local hardware store and get nylon 3/8 to 1/2 hose fittings and a couple of clamps. Add 1 ft of 1/2 hose for spacers and you're gold. It might help water feed through the pump (lowering it an equal amt in resistance on the other end) and prevent internal turbulence (which lowers flow and raises heat).

07-10-2002, 03:46 PM	#10
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	MeltMan: all eheim pumps are threaded and use adaptors to connect hose. The stock 1048 comes by default with 2x 1/2" The 1250 with 1x1/2" and 1x3/4" I don't know for the 1060 (go check eheim.de ) All are perfectly leak proof thanx to o-rings (for Eheim parts, for that matter) so swapping connectors is child's play.

07-11-2002, 10:33 AM	#12
Ozzie Cooling Neophyte Join Date: Jul 2002 Location: Twin Cities Posts: 9	Tygon or silicon stretches fairly easy if you put the end of the hose in hot water...but you have to hurry and it is very pliable...

07-11-2002, 10:50 AM	#13
MeltMan Cooling Savant Join Date: Aug 2001 Location: KS Posts: 374	Thanks Gmat, I think i will be upgrading and giving the Rio1400 to my little brother. Im tired of listening to his "hairdryer" sounding delta 60 __________________ MeltMan Lurker Supreme!

07-11-2002, 12:21 PM	#14
Nomad2000 Cooling Neophyte Join Date: Apr 2002 Posts: 56	I fitted tygon 1/2 on inlet of Eheim 1250. Can say - it was difficult enough.

07-11-2002, 12:23 PM	#15
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	Remember these are German products. Like everyone around the world they use metric units... The 1250 has 1x12mm and 1x16mm connectors. (edit) I just checked Eheim site. 1048: 2x13mm (they're a tad bigger, because of the conical shape) thats about 1/2" 1250: 1x13mm + 1x17mm (that would be 1/2" and 3/4") 1060: 1x18mm + 1x28mm Last edited by gmat; 07-11-2002 at 12:35 PM.

07-11-2002, 01:03 PM	#16
dacooltech Pro/Vendor Join Date: Feb 2002 Location: NYC Posts: 267	Nomad2000 - For the suction side of the Eheim 1250, you need a 1/2"NPT (thread size) to 1/2" (tube size) fitting. This one here: http://www.cooltechnica.com/Merchant...egory_Code=TAA make sure you use teflon tape, because it doesn't have O-Ring like the original ones. Tygon R-3603 is not as flexible as silicone, because it's still PVC based tubing. But like suggested earlier the hot water trick works. Bruce www.cooltechnica.com Last edited by dacooltech; 07-11-2002 at 01:53 PM.

07-11-2002, 08:12 PM	#17
bdunosk Cooling Neophyte Join Date: May 2001 Location: Cincinnati, OH Posts: 93	It will, with 3/8" silicon tubing. I did it. Use hose clamps, as always... also realize that it will at least temporarily (more likely permanently) stretch the ends of the tubing. If you put non-metric fittings on, they will not be perfect. I used teflon tape and used goop around the junction of the barb and pump. I'm not sure how this would work for the outlet barb, since it's somewhat recessed. This was all on a 1250, btw.

07-12-2002, 03:32 AM	#18
Nomad2000 Cooling Neophyte Join Date: Apr 2002 Posts: 56	I have tygon with thick walls - it is softer. For 1250 I could fit 3/8 - outlet and 1/2 - inlet.

07-13-2002, 04:50 PM	#19
ksw Cooling Savant Join Date: Feb 2002 Location: SWEDEN(cold...) Posts: 195	ehm. a little thaugh. eheim 1250 + 3/8 size tubing = not a good idea. id rather go for 1/2 inner diameter and hoseclamps on it. __________________ www.webraced.com <- addicted as hell /me is!

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