About: http://webisa.webdatacommons.org/283936303

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 sleeve 13 of the valve 10 may be made of any suitable elastomeric material such as a rubber or plastic.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com