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The McDonnell & Miller 307000 Snap Switch (Model Number FS7-31) is an essential replacement SPDT snap-action switch designed for field repairs of high-performance liquid flow switches and air flow switches
spring-return pneumatic actuator ensures the valve returns to the open position upon loss of air pressure
To assist with proactive system management
allowing for safe localized maintenance without depressurizing the entire fuel line
Lennox 71L45 Gasket 321702-401 The McDonnell & Miller 307000The Lennox 71L45 is a critical Flue Collector Box Gasket designed to maintain the structural integrity of the combustion path in high efficiency furnace repair applications. This high temperature sealing component is engineered to eliminate exhaust gas bypass by creating a gas tight seal between the flue collector box and the heat exchanger interface. For technicians, ensuring a zero leak seal is essential to prevent CO leakage and maintain proper
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