Description
The Armstrong Fluid Technology 425742-001 Impeller Washer is a precision-fit spacer used to support correct alignment of the impeller within pump assemblies. It is installed in circulator pump units and hydronic equipment where it maintains proper positioning between rotating and fixed components. In HVAC systems, it is placed inside pump-driven water circulation setups to stabilize impeller spacing and ensure consistent movement of fluid through the loop. The washer works as a small mechanical interface that reduces misalignment and supports smooth assembly fitting during pump operation.
