| http://www.w3.org/ns/prov#value | - If switch 56 gives a positive indication that plug 22 is properly inserted in tube 18, the operator or others will then cause a fluid such as oil to be introduced through first conduct 32 at a pressure of approximately 3,000-7,000 psi and into annulus 34 which causes housing 12 to move downwardly with respect to tube 18 while the operator or remote equipment supports housing 12.
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