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While bi-directional
Designed with a forged brass body and a nickel-plated stem
Featuring a high-grade Buna-N diaphragm and precision-machined stainless steel plunger
Its local flame sensing technology ensures stable burner operation by monitoring the flame rectification signal immediately after the ignitor de-energizes
Lochinvar & A.O. Smith 100109846 Limit Switch 318518-761 While bi-directionalThe Lochinvar & A. O. Smith 100109846 is a 90 150F M R limit switch engineered for high precision thermal protection in residential and commercial water heating systems. As a critical safety component, this manual reset thermostat monitors air or water temperature to prevent overheating conditions that can lead to equipment failure or hazardous operation. It is specifically designed for cross brand compatibility, serving as a direct replacement part