Lochinvar & A.O. Smith 100208661 Flow Switch R-22 you should never purposely mix

you should never purposely mix lubricants

The FLR0779 typically requires gasket RNG01410 for a leak-proof seal

Can I use this to replace a different brand of gas valve

Logic Regulation: Integrates seamlessly with existing 24V transformers and thermostat wiring to maintain system timing and sequencing

allowing for rapid replacement without modifying existing pneumatic connections

Lochinvar & A.O. Smith 100208661 Flow Switch R-22 you should never purposely mixThe 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