Blow-Down Subs

Blow-Down Subs
 

The Roschen Blow-down Sub is used to clear blockages in the slots of the interchange, Rock Bit Adaptor, or dual tube drill rod inner tube. Connected at the top of the RC drill string, this product seals the annulus of the dual tube rod and channels the airflow down the RC inner tube. The Blow-down sub is comprised of two components – the Blow-down Sub inner tube and the outer body.