Originally Posted by
mauryr
These images are taken from the festo QS specifications and clearly state these connectors are designed for vacuum as well as pressure.
-.95 bar and up.
While it's true the tube must be cut well, rigid and especially must not make sharp turns right after exiting the connector, I don't see how it can be claimed these are unsafe for the suction side.
I've been using one before the UAT and one between UAT and pump on each airplane for the past 4 years and so far never had any issues (up to 180N).
You answered the question. There are a few preconditions for it to work well and consistently so. It is not fit and forget. Because you are aware of this and take the required precautions it works for you. Unfortunately there are others out there without that insight. Also Festo does not spec the leak rate for that fitting. All seals leak depending on medium and application.
These are really light and reliable. Easier to remove/fit than regular barbs but with lockable gland. Goes to zero Bar. The diff between zero and 0.05 is an airleak...
