Lochinvar & A.O. Smith 100208661 Flow Switch R-22 The unit features a 3"

The unit features a 3" probe with a unique non-metallic

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

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

allowing for rapid replacement without modifying existing pneumatic connections

This component is compatible with a wide range of high-efficiency models

Lochinvar & A.O. Smith 100208661 Flow Switch R-22 The unit features a 3"The 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