Tests on a marine engine A similar problem was encountered not long ago with the fuel-pump spill valves of a new RD90 engine. ... Erosion due to cavitation was detected after a few hours of service both on the spill valve itself and on the valve seat (Fig. 21). ... and spill pipes 7 Fuel filter 4 Discharge pipe to nozzle 24 Diagram of the cavitation tests on the dualtimed fuel pump of an RD90 marine engine.
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