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LEGEND - CIRCULATING SYSTEMS acc. to API 682 (610)

Standard flushing and auxiliary equipment systems presented above are the systems most often used in industry. The equipment presented here is the necessary minimum option and, after agreements made with the user, the systems below can be extended increasing their functionality.

Drawing on the left (A) shows diagrammatic arrangement of conduits and instrumentation, while the drawing on the right (B) shows the most important details of the stuffing box (the seal chamber).

filter	flowrate indicator	orifice	flow-regulating valve
pressure switch	separator	valve	PCV- automatic valve
heat exchanger (cooler)	pressure indicator	temperature indicator