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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Chemical Resilience: Optimized for compatibility with synthetic and mineral oils used in high-capacity HVACR systems
contractors can restore original factory specifications and maintain proper linear flow characteristics in demanding commercial hydronic applications
also identified by part number OP-175
meaning the contacts remain open even if pressure returns to normal
Lochinvar & A.O. Smith 100093633 Switch 328140-751 Chemical Resilience: Optimized for compatibilityThe Lochinvar & A. O. Smith 100093633 Pressure Switch is a critical OEM safety component engineered for high efficiency water heating systems, including Polaris water heaters. This 0. 85" WC pressure switch operates as a normally open contact that closes when the inducer fan generates sufficient static pressure, ensuring the combustion cycle only proceeds under safe venting conditions. As a direct Polaris IS22085 replacement, this kit provides a
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