Patent ID: 7789106

Claim:
A fluid isolation valve comprising: a valve body, said valve body having a first fluid flow port, a second fluid flow port, a fluid drain port, and a hot water relief port; and a flow diversion device disposed within said valve body said flow diversion device including, a ball rotatable about and axis of rotation; a through hole extending through said ball; and at least one fluid flow path through said valve body, said flow diversion device being configurable between a first configuration wherein said first fluid flow port is in fluid communication with said second fluid flow port through said through hole and said first fluid flow port is in fluid communication with said hot water relief port through said at least on fluid flow path, and a second configuration closing fluid communication between said first fluid flow port and said second fluid flow port wherein said first fluid flow port is in fluid communication with said fluid drain port and said first fluid flow port is in fluid communication with said hot water relief port through said at least on fluid flow path.