About: http://webisa.webdatacommons.org/51246299

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 Problem With Double Check - Though the preventer is built with two check valves, in the instance that dirt or other objects gets stuck in one valve, it is likely that the same will happen to the other valve at the same time.
http://www.w3.org/ns/prov#wasQuotedFrom	sprinklerwarehouse.com