How do I attach the high altitude coupling?

This is the High Altitude coupler. Some early versions utilized a friction coupling which can fail in the field.

This is the High Altitude cou­pler. Some ear­ly ver­sions uti­lized a fric­tion cou­pling which can fail in the field.

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:

  1. Glue the fit­ting in place with super glue, goril­la glue, or PVC cement.
  2. Remove the fit­ting entire­ly, and use a sleeve coupling.

Here is a pic­ture of the sleeve cou­pling technique.

Remove the white coupler fitting - it is not glued on and insert the pvc tube inside the reinforced tube until the fit is secure.

Remove the white cou­pler fit­ting — it is not glued on and insert the clear tube inside the rein­forced tube until the fit is secure.

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.