How reliable are quick disconnect fittings?

[sifan]

I am about to install a pre-luber kit to my car that comes with a set of quick disconnect fittings. How reliable are these type of fittings, i.e. do they leak in the long run?

Also, should I install it on the input side (oil drain by gravity) or output side of the pump (oil drained by pump)?

 

[sifan]

The kit comes with 1/2" hose. Can someone recommend a Y type valve such that if I decide to use pump to drain oil, I can just use the valve to redirect the oil on the output side of pump instead of using quick disconnect fittings?

 

[Gary Allan]

I dunno ..depends on who made the fitting

Regular brass type air chuck fittings are fine as long as the O ring inside doesn't go bad. They'll handle all kinds of pressure ...don't know about temp. I guess that depends on the O ring and how good the fitting was manufactured.

 

[sifan]

If the o-ring is of good quality, how long will it last? Is it a common practice to replace it periodically?

 

[Gary Allan]

How long it will last depends on how many times you use it. I would imagine that you would get a long life out of it in your usage. If you can find the appropriate O rings to replace the old ones (rental outfits do this routinely on pressure washers - heated and otherwise so they might have the "in" on what you need) ..then the fitting is good to go ..assuming you don't bang it around and whatnot

Do you have an image to this quick disconnect??

 

[sifan]

Sorry, I do not since I do not have a digital camera.

 

[sifan]

http://www.pre-luber.com/accessoriesorder.htm

Please scroll down the above web page to see the photo of quick disconnect fittings.

 

[johnd]

I've never seen a quick disconnect hydraulic line on a tractor come off once it was connected. I'd say they were pretty reliable. Air type handle hundreds of pounds, the ones for auxiliary hydraulic equipment probably the pressure is hundreds higher than that.

 

[Laminar Lou]

quote:

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Originally posted by johnd:
I've never seen a quick disconnect hydraulic line on a tractor come off once it was connected. I'd say they were pretty reliable. Air type handle hundreds of pounds, the ones for auxiliary hydraulic equipment probably the pressure is hundreds higher than that.

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We use them on forklifts all the time, they are constantly flexed and bumped into. Never seen one fail. As long as it was designed for your purpose, I wouldn't worry about it at all.

 

[sifan]

I am more concerned about arter connecting/disconnecting them during oil drain many times such that they might start leaking.

 

[Laminar Lou]

quote:

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Originally posted by sifan:
I am more concerned about arter connecting/disconnecting them during oil drain many times such that they might start leaking.

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I see your point. We have a clamp truck that gets disconnected often to change over to forks. It's never leaked that I have seen and it's an old beast. I know with air lines I have had even cheapo fittings last near forever (and that is with dropping them on the concrete all the time).

Honestly, I think you can sleep well at night with these.

 

[carock]

They use hydraulic quick disconnects on aircraft.They are usually stainless or aluminum, but the same design as the ones used on trucks. You should be good.

 

[Quickbeam]

They should be fine. If you want to spend the money try some Colder Products Corp (CPC) couplers. They have some nice stainless miniature ones in either open or self sealing. They're also available in other materials. It's what I used on my bypass filter. The SS ones are a tad spendy though.

 

[heavyeqtech]

It's hard to tell from the picture but those look like soft brass air line fitting's. They will eventually leak if used in a service where they vibrate, like on an engine. If they are steel then they should last a long time.