Pitot Static line and fitting size - big enough?

[markscogg]

Got a Skyview, steam gauge and now Mini X all hooked up with Nylo-Seal -4 tube and fittings.
That is 1/4" OD tube with .035 wall . Then there is an insert placed in each tube end before locking it down in the union "T", elbow or whatever you are using. (insert part number is 259-N04.) http://www.aircraftspruce.com/catalo...hanyloseal.php

The hole in this insert is small, just slightly over 1/8".
Is this big enough? What most people are using?
Can you get a seal without using the fitting in the end of the tube?

Thanks

[David Paule]

Sure hope so, my pitot tube has an inlet of about that size. So does the one on my Cessna 180.

Dave

[rvbuilder2002]

There is no actual flow through a pitot or static line so the diam. of the opening doesn't matter.
The system works via a change in pressure within the tube.

[peter52]

Does it matter what type of line is used for pitot/static..i.e. polyethylene line from Home Depot 1/4" O.D. 0.035 wall?