The LiMAR® Flo & Tension Disconnect provides a contingency means of releasing and recovering a stuck BHA back to surface without the need for deploying a drop ball. It is primarily used in fishing BHA’s, positioned directly below impact hammers, jars etc...

In conjunction with a pre-determined overpull, the Flo & Tension Disconnect can be released by increasing the pump / flow rate to activate an internal piston to shear out a number of shear screws. The upper section of the assembly will pull free from the lower section leaving a clean internal fish neck profile for subsequent retrieval.

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  • Contingent release point used primarily in fishing BHA’s
  • Suitable for use during stiff wireline operations where a drop ball cannot be used
  • Ideally suited for use where drop ball deployment is impeded by deviation


  • Torque through feature
  • Drop ball not required
  • Short make-up length
  • Standard Benoil rupture disc port
  • Disconnect Sub fitted with standard GS type internal fish neck profile
  • Available in a range of sizes to suit industry standard Coiled Tubing diameters and BHA’s
  • Simple, robust design ensuring ease of operation for the end user
  • Selected components QPQ treated
  • Hexagonal flats for safe make-up & break-out
  • Connection options to suit customer requirementst
  • Corrosion resistant materials
Assembly Part No. Actual OD Maximum ID Disconnect GS Profile Make up Length
149-1687-XXX-RX 1.687" 0.500" 1-1/2" 20.48"
149-1750-XXX-RX 1.750" 0.500" 1-1/2" 20.48"
149-1780-XXX-RX 1.780" 0.500" 1-1/2" 20.48"
149-2125-XXX-RX 2.125" 0.625" 2" 22.32"
149-2250-XXX-RX 2.250" 0.625" 2" 22.32"
149-2875-XXX-RX 2.875" 1.000" 2-1/2" 28.77"

XXX - Last 3 digits of part number denotes connection type - Please refer to the connection code data sheet. For additional sizes or further information please contact sales

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