Each blow can be controlled positively by the operator to deliver a very light blow or a blow of very heavy impact. Full circulation may be maintained throughout the tool for effective flushing. Full torque may be utilized in either direction and is at all times by means of heavy duty spines which are continuously in engagement.
Only straight pull is required to operate the Bowen Type Z Oil Jar, and successive blows can be struck as often as the operator can slack off and raise the running string.
The Bowen Oil Jar should be tested in the Bowen® Jar Tester prior to operation.