Installation clearance between the end face of the internal gear pump and the side cover plate
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In the installation dimension table for the axial clearance between the end face of the internal gear pump and the side cover, as specified in the maintenance specifications for 2019, what does the pump size DN**** refer to – which dimension of the pump?
DN stands for Diameter Nominal; in the context of pumps, it refers to the pump’s nominal diameter, that is, the size of the pump’s connection port. In the installation dimension table for the axial clearance between the end face of the internal gear pump and the side cover, DN**** should refer to the requirement that the appropriate axial clearance be selected based on the pump’s nominal diameter. The specific dimensions must be checked in the relevant maintenance specifications or installation instructions. .
I understand it’s the size of the pump inlet and outlet
DN is passable for pipeline valves