This valve is designed for standard cooling water applications

making it a reliable drop-in solution for Carrier air handler motor swaps where industrial-grade durability is required

40VA Power Capacity: Provides ample wattage for multi-stage systems and accessorized HVAC configurations

Enhanced Safety: Built to stringent factory specifications to ensure reliable ignition and gas manifold pressure regulation

the float and bellows assembly is sold as a standalone mechanical component

Lochinvar & A.O. Smith 100049890 Port Observation 320788-704 This valve is designed forThe Lochinvar & A. O. Smith 100049890 Port Observation is a critical OEM component designed for high performance commercial boiler maintenance and flame signal monitoring. As a veteran technician knows, maintaining a clear line of sight into the combustion chamber is essential for validating burner performance and ensuring the fuel to air mixture is optimized for peak thermal efficiency. This sight glass assembly is engineered to withstand the extreme