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The “R” lock mandrels with the flow control components are designed for the “R” seating nipples installed in heavy weight tubing. These lock mandrels similar in design are selective, this is made possible bytheir running tools.

The lock mandrels maybe installed in any one of multiple seating nipples installed in the tubing string of comparable size. Once the desired nipple has been located in the tubing string these mandrels are mechanically locked. This is done by driving the expander sleeve behind the keys, holding the mandrel in a locked position.

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