About: http://webisa.webdatacommons.org/375624656

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 forming of such screw threads is easily effected in most cases when the valve member 4 is of a relatively soft metal such as copper or bronze.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com