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Effects of Turn Down

SJPs offer stable LP flow rate turn-down from the design flow rate to near zero LP flow rate without the need of any active control. Hence they are tolerant to sudden changes in LP flow rates. If the HP pressure / flow rate is significantly reduced below the design value, the nozzle needs changing to match the new HP condition. If the discharge pressure changes, the SJP automatically adjusts the LP pressure to match its performance.

An SJP can be operated down to zero suction flow rate without causing mechanical damage. However, at zero LP flow conditions and full HP flow only, the temperature effect and possibility of hydrate formation needs to be investigated.



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