Boiler Feedwater Startup and Regulator Valve

In the normal range of plant operation, the boiler feedwater regulator experiences high flow rates with low differential pressure. However, during startup, this valve experiences low flow rates with very high differential pressure, which can cause severe cavitation damage. Some feedwater systems are designed using one valve to handle startup and normal operating conditions. Others are designed using a separate small startup valve to handle low flow, cavitating conditions and a second larger valve to handle high flow rates required for normal operation.

Fisher™ feedwater startup and regulator valves are engineered to eliminate cavitation during initial operation and provide the rangeability required for smooth transition from startup through full load operation.