| http://www.w3.org/ns/prov#value | - In a feedback, motor-operated valve, comprising valve means including a casing having an inlet, an outlet and a valve seat operably positioned therebetween, and further including a valve element movably mounted in said casing to control flow between said inlet and said outlet, said valve element adapted for screw-like movement into and out of sealing engagement with said valve seat by a valve stem
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