Hydraulic Calibration Sub

The Hydraulic Calibration Sub allows rapid and accurate set up of the Power Jar prior to deployment.

The Hydraulic Calibration Sub is easily made up to the jar by sliding the sub over the lower end and by simply inserting the punch and split guide ring. The handle can then be turned to open the jar at the predetermined setting required. With a 1:1 setting ratio, the hydraulic gauge displays the actual release force expected downhole.


  • Directly calibrates the Power Jar for downhole use

Features & Benefits

  • One Calibration Sub suits all connection types
  • Removal of integral threaded jar subs not required
  • Direct 1:1 setting ratio
  • Quick and easy Power Jar set up
  • Inventory reduction
  • Robust design

Product Code: 221