About: http://webisa.webdatacommons.org/156903045

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	Referring now to the attached drawings, particularly to FIG. 1, a valve body 1 includes a cylindrical space, at one end 1a being open, and in this space is slidably provided a piston 2.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com