About: http://webisa.webdatacommons.org/88501622

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	Safety valves 66 in the illustrated embodiment are pipe fittings which have been secured within bores passing through outer shell 30 by conventional means, such as welding.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com