Cascade type reducing water regulating pneumatic valve have advantages?

this pneumatic valve can be used in large and medium-sized generator, control of boiler main steam and reheat steam temperature of warm water flow reduction, it is one of the key regulating pneumatic valve power plant. The STN reduction of warm water regulating pneumatic valve is a kind of multistage throttle regulation of air defense pneumatic valve, also known as high pressure difference regulating pneumatic valve, it is a new structure of the pneumatic valve adjustment.
cascade type reducing water regulating pneumatic valve has the following advantages:
. Fluid level step-down, fluid direction changing, decrease the STN warm water cascade structure is used to adjust the pneumatic valve, fluid through the winding channel, the purpose is to reduce the flow velocity, energy consumption to prevent liquid cavitation.
to increase flow resistance, control flow, to prevent cavitation damage. Allow the differential MPa.
. Multistage throttle: large flow throttling, small flow throttling, to reduce fluid scouring abrasion on the surface of a pneumatic valve core.
. Throttling face and sealing face separate, pneumatic valve core and pneumatic valve core set of surface hardening treatment, hardness of HRC, closed tight, long service life.
. Pneumatic valve core surface there is big gap open ~ mm welding slag, etc solid particle fluid, pneumatic valve core will not be jammed, flexible motion.
. Good flow control characteristics, wide adjusting range ( About ~ %) 。 The regulating pneumatic valve is patent product, patent registration number in China is the NO. , many power plants has been successfully used the multistage throttle regulating pneumatic valve.