About: http://webisa.webdatacommons.org/53493786

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	However, no further supporting structure such as the rings provided in the embodiment shown in FIG. 6, are provided to prevent unintended manipulation of the valve 36' resulting in opening of the valve openings of the valve member 38'.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk