| http://www.w3.org/ns/prov#value | - It should be noted that although the embodiment of the system shown in FIG. 1 is used with solenoid operated safety valves, the system can also be used to provide operating power and control to other types of solenoid operated valves such as a solenoid operated gas lift valve as shown in U.S. Pat. No. 3,427,989.
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