Alternatives for Signal and Pneumatic Connectors?

[Nathan M]

[quote=nuclearnerd;1616457]I've heard a lot of these rules of thumb for getting push to connect fittings to hold reliably. We've worked at trying to cut tubing square, pushing the tube all the way into fittings, and throwing out any batch of tube we thought was failing repeatedly. There's probably more we can do for quality assurance, but at some point I have to step back and think "there has to be a better way".

In 2015, we used all plastic push connect fittings similar to the ones that are seen in your photo and also had issues with them failing. We switched to ones with a metal ring (like the ones here http://www.andymark.com/product-p/am-2015.htm) and also started using pneumatic tubing cutters to cut our tubes square. The new fittings work much better.

*sorry I don't know how to use this forum very well*

[dradel]

Originally Posted by nuclearnerd

Our tubing and fittings are pretty much all the AndyMark stuff (not sure what brand). We have a few from McMaster Carr - I'll have to check which



I'm sure 1 through 3 were the causes of many failures, but I hadn't considered #4, thanks!



I was wondering if barbed fittings might be a more "fault tolerant" solution.

Barbed fittings are not the answer.

If really concerned about it you can go with a compression fitting but those have the draw back if not as easy to undo and service.