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Class Information
Number: 417/111
Name: Pumps > One fluid pumped by contact or entrainment with another > Aerated column > Valved gas inlet > Plural serially actuated valves
Description: Apparatus wherein said valve means comprises plural valves mounted at vertically spaced levels along said vertical column, and having common mechanical or electrical actuating means to actuate or permit the actuation of the valves in a particular sequence.

Patents under this class:

Patent Number Title Of Patent Date Issued
8418768 Bypass gaslift system, apparatus, and method for producing a multiple zones well Apr. 16, 2013
7500525 Gas well de-watering apparatus and method Mar. 10, 2009
7278489 Gas turbine for oil lifting Oct. 9, 2007
4715441 Side pocket mandrel Dec. 29, 1987
4545731 Method and apparatus for producing a well Oct. 8, 1985
4295795 Method for forming remotely actuated gas lift systems and balanced valve systems made thereby Oct. 20, 1981
4251191 Method for lifting oil in a well Feb. 17, 1981

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