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Type TDC Automatic Recirculation Valve
Brand: Schroedahl GmbHAutomatic Recirculation Valves protect centrifugal pumps against overheating, excessive noise, instability and cavitation during low flow conditions.
The main flow positions the check valve at a certain point. The stem of the check valve transmits the motion via a lever to the bypass. The bypass system controls the bypass flow in a modulating way and reduces the pressure to bypass outlet level.
The full minimum flow is bypassed when the check valve is seated. The bypass is fully closed when the check valve is in its upper position, thereby allowing full pump flow to the system.