The ESAB (Thermal Arc) 4120-2012 Sight Glass Assembly is a specialized replacement component designed for the maintenance of industrial welding water cooling systems. In liquid-cooled TIG and MIG applications, maintaining continuous coolant flow is critical to preventing catastrophic failure of the torch and power cable. This sight glass serves as the primary visual interface for operators to verify system status without interrupting operations.
Manufactured to OEM specifications, this assembly ensures chemical compatibility with standard welding coolants, including ethylene glycol and propylene glycol mixtures. The component is engineered to withstand the thermal cycling and pressure inherent in recirculating pump systems. Over time, the original sight glasses on cooling units can become clouded due to chemical exposure or cracked from physical impact or thermal stress. Replacing this unit restores optical clarity and system integrity.
The assembly typically includes the transparent dome or window and the necessary retaining mechanism to secure it to the cooler's chassis. Proper installation of this part is essential for maintaining the IP rating of the equipment and preventing fluid ingress or egress. It is compatible with select legacy Thermal Arc and Tweco water coolers, often found in heavy fabrication environments.
| Additional Information |
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| Part Type:Sight Glass Assembly |
| Compatible Equipment:Thermal Arc Water Coolers, Tweco Water Coolers |
| Material:Plastic, Polycarbonate |
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| Part Type:Sight Glass Assembly |
| Compatible Equipment:Thermal Arc Water Coolers, Tweco Water Coolers |
| Material:Plastic, Polycarbonate |
