Boiler Feedwater Control Valve

The boiler feedwater control valve is a high-pressure difference control valve with a pressure-balanced sleeve structure. The sleeve and valve core in the valve trim are a mixed structure of multi-hole and single-stage. The fluid first passes through the sleeve window for the first-stage throttling, and then undergoes three-stage continuous single-stage throttling, effectively controlling the flow velocity at about 30m/s to prevent cavitation damage. It allows a large pressure difference and has good sealing performance. The valve body channel is in an S-shaped streamline, with a large flow rate and good dynamic and static stability of the control valve. The throttling part is separated from the sealing surface, effectively protecting the sealing surface. The surface of the valve trim is hardened to a hardness of about HRC70, resistant to scouring and with a long service life. This valve is one of the important control valves in the boiler feedwater system of thermal power plants. It can also be applied to the control of high-pressure difference fluids in other industries such as petrochemicals and automatic control systems. The boiler feedwater control valve can be pneumatically or electrically controlled.