Intelligent Leak Detection The WeldSaver’s proprietary detection algorithm rapidly identifies flow velocity changes that distinguish true leaks from pressure-, temperature-, and motion-induced effects, positively identifying a leak condition in less than 0.3 seconds. In the event of a cap loss or other leak, the WeldSaver signals a state change to immediately stop the weld process, simultaneously closes an attached shutoff valve, and retracts water from the cooling gun. Whether monitoring coolant flow to weld guns or to the entire weld cell cooling circuit, the WeldSaver with eVac Coolant Retraction Module rapidly and reliably detects changes in flow continuity created by slow leaks, cap loss, or other catastrophic events and significantly reduces or prevents coolant dumps on expensive cap-changers and weld cell floors.