including the modulating valve assembly and necessary mounting components to restore factory-spec regulation

Critical Safety: Prevents combustion byproduct leakage into the supply air stream

and cycle phases

No-Solder Installation: The 1/2" SAE Flare ends offer a leak-proof mechanical connection ideal for tight spaces

Armstrong Fluid Technology 975000-303 Filter Cartridge R-134A including the modulating valve assemblyThe Armstrong Fluid Technology 975000 303 Filter Cartridge is a critical component designed for high efficiency sediment filtration in commercial and industrial HVAC systems. Engineered specifically for hydronic heating and cooling loops, this replacement water filter ensures the longevity of your mechanical seals and heat exchangers by capturing particulate matter that causes abrasive wear. This Armstrong filter cartridge features a robust