Boiler feed water control valve is a novel pressure balancing sleeve structure high pressure differential regulating valve.
The sleeve and the valve core of the inside of the valve are a kind of porous
A mixed structure with a string level.
The first level of throttling is carried out through the sleeve window, then through the third-grade continuous cascade, which allows the pressure differential to be large and the sealing performance of good fluid channel is presented
S streamline, high flow, and stable dynamic stability.
The valve is one of the important regulating valves of boiler water supply system of thermal power plant, and also applicable to other workers such as petrochemical
The automation control system of the industry controls the high pressure differential fluid.
Technical characteristics
The fluid pressure and fluid direction are constantly changing, increasing the flow resistance and preventing the flow of liquid pressure within the valve to reach 24MPa.
Valve core 4 throttling, the seat airtight cover with a throttling element to improve the flow state, fluid velocity of 30 m/S;
The throttle surface is separated from the sealing surface. The surface of the valve core, valve core sleeve, stem and throttle element is hardened, and the hardness reaches the HRC70, which is close and long.
The valve core surface has a large gap, the fluid contains 2 ~ 3mm weld slag and other solid particles, the valve core will not die, the movement is flexible.

Product specification
Size range 2 "- 10"
Pressure range ANSI 1500-2500LB
Suitable temperature below 420 ℃
Welding type and flange type of pipeline interface
Valve form straight-through type
Valve cover form standard
The inner parts of the valve are multi-layer porous sleeve, balance type internal structure
Valve material 20 # forged steel or stainless steel
Valve core material ASTM 440B or other stainless steel material
Valve core set material ASTM 440B or other stainless steel material
Packing due to nickel alloy wire reinforced graphite packing
Flow characteristic linear or equal percentage
The level of the leakage grade of ANSI B16.104 V VI
The driving mode can configure electric, pneumatic, hydraulic and other actuators