commonly used in chilled water systems

including lead

ensuring the venturi effect remains optimized for a consistent air-to-fuel ratio during high-demand operation

Superior Sealing: The TFE-coated EPDM seat provides an airtight seal that prevents simmering and premature leakage at 15 PSIG

Built from 1/2 inch steel with a durable protective coating

Laars Heating Systems R0023000 Limit Switch 321042-401 commonly used in chilled waterThe Laars Heating Systems R0023000 Limit Switch is a critical safety component engineered to provide overheat protection for high performance hydronic and pool heating systems. This 150F high limit switch is calibrated to automatically interrupt the electrical circuit when internal water temperatures exceed the 150F threshold, effectively preventing thermal damage to the heat exchanger and downstream piping. As a veteran grade OEM replacement part,