Black is Common

Durable brass construction resists corrosion and thermal degradation in high-heat zones

Always verify the specific HVAC part compatibility with your model's unit serial number

this HVAC replacement filter is calculated to meet the original factory CFM specifications for 3-ton to 3

Weil McLain 383-600-069 Control Els PW 17895 Black is CommonThe Weil McLain 383 600 069 Low Water Cutoff (LWCO) is an essential boiler safety device engineered for high performance hydronic systems. This probe type LWCO is specifically designed for integration with Weil McLain WM97+, Ultra Commercial, and SlimFit boiler models. It functions by monitoring fluid levels within the heat exchanger, providing a critical boiler burner shutdown signal if levels drop below the safe threshold. This control is a direct