Blow Up Sub 4"

Blow Up Sub 4"
This product can be used in the following Reverse Circulation systems:
RC Tricone System Conventional RC System 
Tri-Cone RC System Conventional RC System


A blow up sub placed at the top of the rod string disconnected from the top drive head. It's used to direct the airflow up the inner tube (through the head to the sample collection tube) to clear a blockage.