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Most reliable Pneumatic Quick Connects ?

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Most reliable Pneumatic Quick Connects ?

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Old 11-09-2019, 05:50 AM
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IFLYBVM2
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Default Most reliable Pneumatic Quick Connects ?

For quite a while, I have used the Robart pneumatic quick connects where it was necessary to remove a wing, etc. In the last year I have had (2) instances of failure with them, both luckily on the ground. The failure mode was
the same both times, with the tiny 'tang' that holds the pieces together breaking and allowing them to come apart under pressure.
I need to change over to something else, and want to know what is the most reliable, bullet proof connections that I can ? Suggestions please !
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Old 11-09-2019, 05:54 AM
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Forgot to add-on this particular application, I have a total of 8 lines to attach. Has anyone tried the large multi connector that Dreamworks sells ?
Thanks-Mike
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Old 11-09-2019, 06:17 AM
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Dave Wilshere
 
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Robart IMO are the best there is. I've never had a failure in 20 years. I guess we don't get the temperature and UV swings you guys might, but my connectors do not yellow and still seal after year and years and many cycles
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Old 11-09-2019, 06:59 AM
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Steve Collins
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I also have used the Robart connectors for decades without issues but, I understand you have had issues with them so consider these connectors that I also use with great success:

https://www.dreamworksrc.com/catalog...disconnects-4/
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Old 11-09-2019, 07:09 AM
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I used the Dreamworks multi connectors in my G650 and have not had any issues, seems as a solid connection:

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Old 11-09-2019, 08:36 AM
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Wow! I was immediately going to say that Robart ones are the best! I have many hard years on them.

I used those large connectors from dream works too, but I only had one set as the Robarts are my usual go to.

How about using the quick wing and fuse mounted ones? Then the force of the wing to fuse connection keeps them on?
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Old 11-09-2019, 09:07 AM
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Wow-Ok maybe just a fluke then-sounds like Robart is what everyone is using pretty much.
Thanks for the input guys.
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Old 11-09-2019, 09:35 AM
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I've used those Colder SMC type fittings since around 2002 as well. Have had a tang or two break, usually on the ones I use on my fill jug fuel lines. A little bulky for airlines in some installations. For those I went to the Air Power screw together type. Don't know if they're available anymore. I did have an o-ring break on one of the Air Power connectors but it was nearly 9 years old. I've also had o-rings go brittle on the SMC fittings too but you can replace the o-rings at Lowes or Home Depot. I also use the shut-off valve versions. Mostly on my UAT fill lines but I've seen them on air systems.

You can get all the SMC types at Fresh Water Systems. Same stuff, less expensive. Free shipping over $89.

https://www.freshwatersystems.com/co...Metaseries=SMC
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Old 11-09-2019, 09:38 AM
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I used the BMV auto connect version on my BVM L-39. In fact I have used it on all my planes that have anything pneumatic except for that G650 since it had so many connections:

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Old 11-09-2019, 01:53 PM
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I use 3mm bulkhead Festo connectors. I’ll put a paint dot near the Festo to match the color of the hose.
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Old 11-09-2019, 05:54 PM
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Ive used Festo/Pisco with no problems to 130 psi.
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Old 11-10-2019, 01:13 AM
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Iv had a few of the robart ones fail and heard many stories of them failing.
They used to be really good and have a nice positive click, but i think they must have changed suppliers or materials as the newer ones are nothing near the quality of what i used to use.
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Old 11-10-2019, 06:54 AM
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That's odd. Until this thread, I had never heard of any of the Robart ones failing.
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Old 11-10-2019, 07:51 AM
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I buy the SMM01 and SMF01 from a local distributor for the last several years. I have not had one break but did have one develope a very slow leak. Usually if a plastic part is going to fail it does so in our high dry climate.
I have made quick disconnects with them for a wing connection for retracts and brakes. Just trimmed off the locking tabs and epoxy them in a mounting plate.
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Old 11-10-2019, 07:57 AM
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3mm festos. Lightweight and works.
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Old 11-10-2019, 07:59 AM
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Originally Posted by Steve Collins View Post
That's odd. Until this thread, I had never heard of any of the Robart ones failing.
For many years, I had no problems at all. But in the last couple of years I have. Makes me wonder if Robart has started using some "knock offs" instead of the OEM supplier...
Just seems that if the parts were the same, I would have seen failures a long time ago, not just recently.
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Old 11-10-2019, 10:31 AM
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In Robart Orange packets, or sold as ‘Robart’...
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Old 11-10-2019, 04:13 PM
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Here’s how I did my wing root. I have been doing it this way for several jets. The only down side is that about every ten to fifteen assemblies, I cut a very small nip off of the end of the 3mm hoses that plug into the Festo.


I put a dot of paint near the Festo for the color of the hose. The two close to the wing tube are for the gear doors. The next two in front of the plug are the gear, with the very front one the brakes.
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Old 11-11-2019, 04:09 AM
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That's a very clean way to do it-Thanks for the pic !
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Old 11-11-2019, 04:24 AM
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Thank you for the compliment. The carbon fiber is the fake plastic design that I bought from Dreamworks.
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Old 11-11-2019, 04:55 AM
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I have had the robert ones come off multiple times, especially on big gas airplanes. I use the luer-lock connector from dreamwork, they work great and dont come loose.

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