Feedwater control valve

Application

 

Automatic feedwater regulating system is important for boiler drum level control in modern power plants. Feedwater control valve could supply and adjust feedwater flow into boiler to keep water level within proper range according to the rate of steam flow. So, feedwater control valve is also named drum level control valve in some occasions. Its performance is vital to reliable operation in 125, 200, 300, 600, 1000MW power generation units.

 

Specification

 

Standard: ASME B16.34, JB/T7387
Size: DN100～DN350
Pressure: PN160～PN420
Temperature: -29℃~570℃
Operation: electric, hydraulic or pneumatic actuator
Flow characteristic: equal percentage
Turndown ratio: 10:1~100:1
Applicable medium: water
Connection: flange or butt weld

 

Features

 

• Multi-stage pressure reduction. Anti cavitation, low noise & low vibration design.
• Forged body with long service life.
• Pressure seal bonnet.
• Cage guided structure to enhance stability of plug under high differential pressure.
• Hardfaced sealing surface to work under severe conditions.
• Expanded graphite, long term leak tightness.