About: http://webisa.webdatacommons.org/61843907

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 zone valves only open up when there is a call for heat and the pump circulates water through the system.
http://www.w3.org/ns/prov#wasQuotedFrom	heatinghelp.com