Because this is an externally equalized valve

ensuring accurate manifold pressure delivery and consistent BTU input for multi-burner configurations

Precision Balanced: Factory-set wheel balance reduces mechanical stress on the motor and minimizes acoustic noise

Universal Compatibility: Validated for use with R22 and R410A refrigerants in systems ranging from 1 to 6

2-way normally closed gas shutoff valve designed for reliable combustion control in commercial and industrial burner systems

York S1-031-09182-000 Control Board 323613-751 Because this is an externallyWhen you're troubleshooting VAV systems or handling complex economizer setups on the job site, the York S1 031 09182 000 Control Board is the standard OEM solution for expanding communication protocols. This expansion module, often categorized as a VAV Econ expansion board, HVAC control board replacement, and York replacement part, is engineered specifically for HVAC system communication modules and VAV control board expansion. It provides the