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Rosewood paper grain — description and returns beneath the overlapping buy card.
Fail-Safe Spring Return: Automatically drives the valve to a normally closed position during power failures to protect against uncontrolled flow
and Lennox commercial models
Does the 100135305 include the mounting gasket
protecting the heat exchanger from dry-firing and catastrophic failure
Internal 10K Ohm Sensitivity: Optimized for municipal water and general-purpose conductivity sensing
Burnham Boiler 104450-01 Aquastat Relay THPU32HP7Y Fail-Safe Spring Return: Automatically drivesThe Burnham Boiler 104450 01 Aquastat Relay serves as the primary immersion controller for hydronic heating systems, regulating high limit protection and circulator functionality. This critical component is engineered to maintain precise water temperatures and prevent boiler overheating by interrupting power to the burner if the high limit set point is exceeded. As an OEM replacement part for Burnham hydronic boilers, it ensures seamless integration