About: http://webisa.webdatacommons.org/430230166

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	FIG. 9A is a cross sectional view of a free flow ring check valve 100 which may be adapted to operate along the principles of the check valve 97.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com