Early versions of ExtremeO2 systems utilized a friction coupling to connect the high altitude connector to the air separation unit.
In some cases the diameter of the insertion tube is small enough not to create a secure friction fit.
When this occurs, the High Altitude Hose connection becomes unreliable, and may detach during use.
There are two field fixes:
- Glue the fitting in place with super glue, gorilla glue, or PVC cement.
- Remove the fitting entirely, and use a sleeve coupling.
Here is a picture of the sleeve coupling technique.
The clear hose is not glued into the fitting. This may cause an unreliable connection which can come out. A field solution is to use a “sleeve coupling”, omitting the white adapter.
The sleeve coupling works because the penetration depth is not limited and only stops when there is sufficient friction to make a secure connection. The coupling can be later removed by twisting and pulling.
We attempt to utilize heat and friction couplings to avoid introduction of adhesives that may cause chemical sensitivity with users.