About: http://webisa.webdatacommons.org/453995621

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	In a preferred embodiment, the valve will fail open, for example if power to the system is interrupted.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com