Electric multistage throttle valve is a kind of novel high pressure difference regulating valve pressure balance sleeve structure. Components in the valve sleeve and the valve core is a combination of a porous and cascade structure, fluid through socket window for the first stage throttling first, then through continuous cascade three-level throttling, allows the pressure difference is big, good sealing, fluid channels in an s-shaped streamline, large flow, regulating valve dynamic stability is good. Electric multistage throttle valve is one of the important regulator of thermal power plant boiler feed water system, also can be used in petrochemical, and other industrial automatic control system for high pressure difference control fluid, can match electric actuators, and pneumatic actuators.

Advantage:

Valve components within the new structure, USES the sleeve throttling, effective control of the velocity at about 30 m/s.

Throttling surface is separated from the seat sealing surface, effectively protect the sealing surface, good sealing performance, long service life.

Components in the valve adopts high strength stainless steel manufacturing, parts surface hardening treatment, hardness can reach around HRC70, anti-scouring ability.

Adopts the pressure balance valve core structure, decrease the fluid the unbalanced force acting on the valve core.