Special electric two seater ZAZN oxygen regulating valve 904, accept the DC current from the signal conditioning instrument, change by adjusting the media flow, the controlled process parameters are kept in a given value. Widely used in electric power, metallurgy, chemical production automation, petroleum, textile, pharmaceutical, paper and other industrial control.

The series of products are nominal diameter from 20 to 200mm, nominal pressure of 1, 1.6, 4, 6.4MPa, temperature range is -250 ℃ ~ 450 ℃, the received signal is 0 ~ 10mA.DC and 4 ~ 20mA.DC. Electric seat regulating valve is applicable to a larger pressure difference. According to valve sealing part material and two kinds of metal and non metal to metal seal, the valve is closed when leakage can reach grade VI (zero leakage) standard. According to the different fillers can be divided into general packing seal and bellows seal two kinds, the former for general occasions, the latter for use in a particular situation does not allow leakage, flow characteristics such as linear or percentage. With different actuators can be divided into common type and the electronic type two. A variety of different specifications to choose..

Product features:
· body by uniform design principles of fluid mechanics of low flow channel, rated flow coefficient of 30%.
· large adjustable range, inherent adjustable ratio 50, linear and equal percentage flow characteristic.
· electrically regulating valve unbalanced force is small, the valve has good stability, the use of large pressure difference.
· regulatory cut off the soft sealing structure of valve, leakage of VI (zero leakage).
· servo amplifier using the depth of the dynamic negative feedback, can improve the accuracy of automatic regulation.
· electric operation in various forms, and can be applied to 4 ~ 20mA.DC or 0 ~ 10mA.DC.
Electronic type electric control valve valve opening control directly by the current signal, without servo amplifiers.
· Bellows Seal Valves the stem form of mobile complete sealing, blocking the fluid leakage.

Technical parameters: