- Reference Plane
Reference Plane is the horizontal plane through the centre of the circle described by the external point of the entrance edges of the impeller blades.
NOTE: For double-inlet pumps, the plane is taken through the higher centre.
Reference Plane is the horizontal plane through the centre of the circle described by the external point of the entrance edges of the impeller blades.
NOTE: For double-inlet pumps, the plane is taken through the higher centre.
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