About: http://webisa.webdatacommons.org/403254786

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Each such valve 131 at each station 141 in apparatus of the present invention is operated by a control signal whose voltage varies from and including 0 to about 5 volts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca