About: http://webisa.webdatacommons.org/41518037

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 the process of losing the gas seal, such valves concurrently contaminate a high purity granular orsimilar material with carbon, phosphorus, boron, nickel, or other elements present in the valve walls.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com