For mid-to-high efficiency hydronic systems

By replacing standard springs with this 5-15" wc green spring

Is this relay compatible with non-Nordyne furnaces

Precision Thermal Response: Calibrated for a strict 145 degree F open threshold to protect the burner vestibule from thermal damage

Lochinvar & A.O. Smith 100133547 Flange Gasket For mid-to-high efficiency hydronic systemsThe Lochinvar & A. O. Smith 100133547 Flange Gasket is a critical high temperature seal designed for commercial water heaters and boiler systems. Specifically engineered for Armstrong ARM1013 cross compatibility, this gasket pair ensures a leak proof interface between the pump flange and the circulation piping. In low and high pressure hydronic loops, maintaining a rigid seal is essential to prevent cavitation and pressure drops. These gaskets are