About: http://webisa.webdatacommons.org/7719588

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, which preferably is a membrane, further includes two o-ring seats 456, which may be, for example, made of silicone elastomer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com