MECHANICAL SPRING JARS

The ACT Mechanical Spring Jar is designed to deliver a very high upward impact  load during wireline operations. It is especially useful when working in high pressure gas wells where hydraulic jars are susceptible to seal failure. The spring  jar can be adjusted for a predetermined release force, therefore offering the  operator a desired force at the tool. The load setting is done with a calibrated box spanner supplied with the spring  jar.

A hydraulic load calibration sub is available as an optional extra to allow the operator to set and test the load rating of this spring jar.