DRILL STEM UPPER KELLY VALVE
A class with identifier
http://staging4.data.posccaesar.org/iso/15926-4/rdl/RDS7155718
| Definition | A <DRILL STEM UPPER KELLY VALVE> is a <DRILL STEM SUB> that includes a valve and is used between the swivel sub and the kelly. |
| ISO number | 4979 |
| Note | Note: The Upper Kelly Valve Sub has left hand threads. |
| RDS number | RDS7155718 |
| Source | Piping |