Armstrong Fluid Technology 818602-100K Bearing Assembly 321702-401 the HK50AA039 control board helps

the HK50AA039 control board helps prevent compressor damage associated with low-pressure conditions

eliminating the need for separate manual balancing valves in the circuit

always verify your existing pilot orifice size and condition during installation to ensure the BTU input matches the manufacturer’s specifications

Is this a direct OEM replacement

Vibration Reduction: Factory-balanced 3-blade design minimizes shaft oscillation

Armstrong Fluid Technology 818602-100K Bearing Assembly 321702-401 the HK50AA039 control board helpsThe Armstrong Fluid Technology 818602 100K Bearing Assembly is a complete, factory integrated SBA 6 solution tailored for high demand fluid handling. This all in one kit includes the core bearing assembly, a high performance mechanical seal, and a protective cast iron coverplate. It is specifically engineered to repair and restore centrifugal pump efficiency in Series S & H circulators and Series 1060 pump models. Featuring a durable 5 8" stainless