This valve is designed for bidirectional flow or heat pump service when paired with the appropriate check valve or internal bypass features common to the B-series

OEM Compatibility: Precision-matched for York HVAC systems to eliminate compatibility errors during HVAC refrigeration parts sourcing

Key Benefits Precise 10K Type II Thermistor: Delivers high-accuracy ambient data for superior economizer control and energy-efficient staging

making it ideal for HVAC zone control applications

Key Benefits for Technicians: Field Versatility: Direct-mount NPT connections and a removable "B" port plug enable rapid conversion between mixing

Lochinvar & A.O. Smith 100208474 Connection Board R-22 This valve is designed forThe Lochinvar & A. O. Smith 100208474 is a critical low voltage connection board designed for seamless integration with Lochinvar Knight WB51 WB211 series wall mount boilers. As an authentic OEM boiler control interface, this component manages the essential signal pathways between the primary control logic and external system accessories. Technicians recognize this board as the central hub for terminal connections, ensuring that thermostat calls,