Barbed Fitting for PS Lines

[ET16]

I'm going to put a Magnefine filter in my ps return line, and I find that I have a fitting problem. The return line is 3/8" and the filter neck is 1/2", so it looks as if I will need a barbed reducer fitting going from one piece of hose to the other. I've found some nylon fittings that do this. Are these okay to use?

Thanks!

 

[wgtoys]

Originally Posted By: ET16
I'm going to put a Magnefine filter in my ps return line, and I find that I have a fitting problem. The return line is 3/8" and the filter neck is 1/2", so it looks as if I will need a barbed reducer fitting going from one piece of hose to the other. I've found some nylon fittings that do this. Are these okay to use?

Thanks!


By far the best solution is to get a 3/8" Magnefine. They are readily available.

 

[onion]

Get the right size filter. Don't use nylon fittings.

 

[ET16]

Originally Posted By: onion
Get the right size filter. Don't use nylon fittings.


Well, I have three of the 1/2" filters already. Would brass fittings be okay?

 

[onion]

Yes, brass fittings should work ok. It'll be an ugly installation, and there will be four extra joints to fail... but you can make it work.

 

[mechtech2]

Like onion said, sure... it will work - with a Rube Goldbergy type of look.
Can you trade the Magnefines for the proper size?

 

[ET16]

Originally Posted By: mechtech2
Like onion said, sure... it will work - with a Rube Goldbergy type of look.
Can you trade the Magnefines for the proper size?


I'd have to sell them. I'm going to try heating the 3/8" hose a little to make it more pliable. I almost was able to get it on the 1/2" neck of the filter.

 

[unDummy]

You risk damaging the hose by cooking it.

The hack fix and better than nylon:

 

[Gary Allan]

He got the MF's at Rock Auto for $2.50 each + shipping. It's a lot cheaper than what the 3/8 or 5/16 MF's cost. He got the lifetime supply.

Nylon should work fine ..or someone needs to tell all the man's to stop using it for engine internals. It handles high temps well...

While I have a ton of brass barbed fittings, and use them with full confidence, most in this size are only rated for 200F (or is it 212F?).

Here's the rating for a brass barb'd reducer coupling like in the image above. This is from McMaster-Carr, page 267. Not even 200F.

Shape
Coupling
Coupling Type
Reducing Coupling
Material
Brass
For Hose Inside Diameter
1/2" x 3/8"
Operating Temperature Range
-40° to +160° F
Maximum Pressure @ 72° F
250 psi
Vacuum Rating @ 72° F
Not Rated
For Use With
Air, Water
For Hose Type
Reinforced Rubber
Clamp With
Hose Ferrule, Worm-Drive Clamp
Specifications Met
Society of Automotive Engineers (SAE)
SAE Specification
Functional SAE J512 Requirement, SAE J476


one rated for 200F is $50 and is stainless steel.

 

[ET16]

Originally Posted By: Gary Allan
He got the MF's at Rock Auto for $2.50 each + shipping. It's a lot cheaper than what the 3/8 or 5/16 MF's cost. He got the lifetime supply.

Yes, this, although now I'm thinking that it wasn't such a bargain.

 

[mechtech2]

Originally Posted By: unDummy
You risk damaging the hose by cooking it.

The hack fix and better than nylon:

I have never seen one of those necked down barbs. Cool. And what a great solution!

 

[ET16]

Originally Posted By: unDummy
You risk damaging the hose by cooking it.

The hack fix and better than nylon:

unDummy,

Where did you find these?

 

[unDummy]

www.plumbingsupply.com Try your local hardware store.