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it provides consistent millivolt output to the safety shut-off valve
Common HVAC Technical Questions
providing identical functional characteristics and mounting requirements
The Watts 0342682 Relief Valve (Series 330-30) is a contractor-grade pressure safety component engineered for residential and commercial hydronic heating systems
Raypak 600893B Limit Switch it provides consistent millivolt outputThe Raypak 600893B is a critical 140F CO Auto Limit Switch designed for high performance safety regulation in professional heating assemblies. This genuine OEM replacement part is engineered to monitor water temperatures within the heat exchanger, providing a fail safe against overheating. When the internal temperature reaches the 140F threshold, the high limit safety sensor breaks the electrical circuit to shut down the burners, preventing equipment