WeldSaver™ 6 with eVac™

The Proteus WeldSaver™ 6 with eVac™ Coolant Retraction Module is for water control in order to control flow, leak detection and to prevent catastrophic coolant dumps at the time of robotic automotive welding operations.


It has been over 25 years, the Proteus WeldSaver is known as the industry’s leading water control device to control flow and provides the fastest leak detection in automotive welding. By integrating a new with eVac™ Coolant Retraction Module, Proteus adds intense protection against coolant dumps while doing welding operations by retracting water from the cooling gun circuit.

Video courtesy RAM Solutions 

Intelligent Leak Detection

The proprietary detection algorithm of the WeldSaver rapidly identifies flow velocity changes, which differentiate true leaks from pressure-, temperature-, and motion-induced effects, identifying a leak condition within 0.3 seconds. In the event of a cap loss or other leak, the WeldSaver signals a state change to immediately in order to stop the welding process, simultaneously closes an attached shutoff valve, and retracts water from the cooling gun.

No matter monitoring coolant flows to weld guns or to the entire weld cell cooling circuit, the WeldSaver with eVac rapidly and reliably observe 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.

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Image courtesy of Sinterleghe S.r.l.

WeldSaver 6 with eVac Key Features

  • Constant indication of coolant flow rate and temperature on browser-based interface – including teach pendants
  • Proprietary leak-detection algorithm sends alarm to weld controller in less than 0.4 seconds
  • When cap gets loss, flow shuts off in less than 1 second or other loss of flow continuity to reduce coolant dumps on floor or equipment by retracting water from the cooling gun circuit
  • EtherNet/IP™ and PROFINET® control interface options
  • User-selectable operating parameters and alarm settings
  • Remote control of valve and system states to support weld guns and cap changers
  • Flow ranges from 6–50 LPM / 1.5–13 GPM
  • Liquid temperatures from 4.0–110 °C / 39–230 °F

Technical and Application Support

Mark Malfatti
(510) 862-8785
Philip Frausto
(650) 448-3285