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the ASM01643 features a low-profile housing that minimizes thermal lag
making it suitable for both hot water and low-pressure steam systems
It features a dual-port configuration
Durable Construction: High-grade extruded aluminum blades and frame with corrosion-resistant brass and stainless steel hardware
Lochinvar & A.O. Smith 100277772 Pressure Switch 323055-751 the ASM01643 features a low-profileThe Lochinvar & A. O. Smith 100277772 Pressure Switch is a critical safety component engineered for high altitude applications in Crest FBN and FBL heating boilers. This F9 high altitude air pressure switch is factory calibrated with a 4. 1 in WC set point to monitor combustion chamber pressure accurately in thinned atmospheres. It serves as a proving switch, ensuring the combustion air blower provides sufficient flow for a clean, safe burn before the
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