Jet Sub

  • These over-the-hammer jet subs will allow large volumes of air to be bypassed above the hammer.
  • This reduces operating pressure and allows better hole cleaning for deep, wet, or soft rock applications.
  • The top ring must be drilled out per the flow chart (see below).
  • Additional rings are available to drill out for different flow characteristics.
  • Must be run pin up.
Use this changable chart to calculate hole size and air flow

(Spreadsheet will download when you click on the link)

3-1/2″ Jet Sub

2-7/8″ Jet Sub

2-3/8″ Jet Sub

Jet Sub without Ring

Jet Sub Ring, Top

Jet Sub Ring, Bottom