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The 100233495 is a standard replacement for many Lochinvar Copper-Fin II and A
you should never purposely mix lubricants
The unit features a 3" probe with a unique non-metallic
This component is compatible with a wide range of high-efficiency models
Can I use this to replace a different brand of gas valve
Lochinvar & A.O. Smith 100208661 Flow Switch R-22 The 100233495 is a standardThe Lochinvar & A. O. Smith 100208661 Flow Switch, also identified by part number 781621 or alias FS8 W, is a heavy duty liquid flow switch engineered for precise proof of flow detection in high efficiency commercial boiler systems and water heaters. Designed as a direct HVAC replacement part for the McDonnell & Miller FS8 W, this unit features a durable stainless steel #3 paddle configuration to ensure reliable contact closure once the system pump