The biggest difference between electric single-seat regulating valve and electric sleeve regulating valve is mainly in performance and application, but they have their own advantages and disadvantages. The advantages of one side may be the disadvantages of the other, which can form complementary and be applied in different occasions. There is no difference in appearance. The main reason is that the spools of the two are different. The sleeve has more than one cover than the spool of a single seat. There are many small holes on the sleeve. The main function is to reduce the vibration of the valve caused by the differential pressure.
Sealing: Electric single seat regulator has smaller leakage and better sealing performance than electric sleeve regulator. Single seat can achieve zero leakage, but sleeve can not.
From the pressure: when the pressure difference between the front and back of the valve is large, only the electric sleeve regulating valve can be used, instead of the single seat regulating valve.
From the application: Electric single seat control valve is only suitable for low flow rate occasions; while electric sleeve control valve can well resist medium impact wear on the seat and spool, suitable for high flow rate occasions.
In terms of performance: sleeve window of sleeve control valve is symmetrically arranged, fluid kinetic energy is concentrated in the center of sleeve, the impact force produced by eddy current is weakened, so the inner parts of the valve are not easy to damage, and the noise is relatively small, which is more suitable for situations with high pressure difference between front and back of the valve; single seat control valve has better sealing performance than sleeve control valve. It is suitable for occasions requiring high reliability, high shut-off performance, low temperature and little pressure difference.