About: http://webisa.webdatacommons.org/137662419

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	d to valve disc 12, or if desired, they may be formed integrally therewith as by casting, molding, forging or other process.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com