Outer joint having a tubulation sealed at the midpoint of the ground portion, and a corresponding hole drilled in the inner joint permitting venting of the side tube when the inner joint is turned to the proper position.
Joint |
Sidearm |
Hole |
14/20 |
6.35 |
3 |
. |
. |
. |
19/38 |
10.0 |
4 |
19/38 |
10.0 (2) |
4 |
.. |
. |
. |
24/40 |
10.0 |
4 |