About: http://webisa.webdatacommons.org/367799027

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	The valve element or disc 28 is sized to fit tightly against the seal 16 in the flow passageway 12 when it is in its closed position, i.e. 90??? from the open position shown in FIG. 1.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es