About: http://webisa.webdatacommons.org/384120493

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 present invention relates to the field of direct acting valve assemblies, and in particular to a valve assembly having an improved structure providing for more reliable opening and closing of the valve port.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com