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This is a 3-way mixing valve typically used to regulate the flow temperature in heating systems by mixing hot supply water with cooler return water
Technicians should verify the burner door gasket integrity separately
Common Questions & Technical Support What is the purpose of the automatic ball checks in the 20-251 series
this relay provides clear visual feedback on the activation state
This SPST cold control is designed for high-performance switching
Bard 8620-080 Switch Els PW 17895 This is a 3-way mixingThe Bard 8620 080 is a precision engineered 75C Close on Rise (CI) Automatic Fan Limit Switch designed for high reliability circuit control in Bard wall mount units and HVAC systems. This SPST thermal switch operates as an automatic reset limit, ensuring the blower fan engages or the heating element disengages once the 75 degree Celsius threshold is met. Engineered for durability in high cycle environments, the 8620 080 serves as a direct OEM