Armstrong Fluid Technology 816304-317K Plastic Impeller 318518-761 Durable Construction: Engineered to withstand

Durable Construction: Engineered to withstand the thermal cycling and high-frequency operation typical of industrial HVACR environments

Using this orifice in a propane system will cause hazardous combustion conditions and soot buildup

How do I correct for zero-point drift after installation

Safety Compliance: Restores factory-specified safety parameters to the heating circuit after a primary limit failure

Is the gas valve regulator spring included in this kit

Armstrong Fluid Technology 816304-317K Plastic Impeller 318518-761 Durable Construction: Engineered to withstandThe Armstrong Fluid Technology 816304 317K Plastic Impeller is a precision engineered circulator pump replacement part designed to restore peak hydraulic efficiency to your HVAC system. This 5 1 4" Noryl impeller is manufactured from high quality, non ferrous composite materials, offering superior corrosion resistance and durability in demanding hydronic applications. As the official 816304 317K maintenance kit, it serves as the direct OEM pump