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93. What type of pump is invariably used as a circulator in a hydronic heating system?
Centrifugal pumps are invariably used as circulators in hydronic heating systems because they provide continuous flow at moderate pressure, a requirement for efficient and steady circulation of hot water in these systems. Other pump types, such as reciprocating, diaphragm, and rotary pumps, produce pulsating flow or are better suited for high-pressure or viscous fluid applications.
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