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ZAZN electric three-way shunt regulating valve

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Product Description

Detailed introduction:
The ZAZN electric double seat regulating valve receives a DC current signal from the regulating instrument, changes the flow rate of the regulated medium, and maintains the controlled process parameters at the given value.
Widely used in production automation control in industrial sectors such as power, metallurgy, chemical industry, petroleum, light textile, pharmaceutical, papermaking, etc.
The nominal diameter of this series of products ranges from 20 to 200mm
The nominal pressures are 1.0, 1.6, 4.0, and 6.4 MPa
The operating temperature range is from -250 ℃ to 450 ℃
The received signal is 0-10mA.DC or 4-20mA.DC.
The electric double seat regulating valve is suitable for situations with large pressure differences.
According to the material of the sealing part of the valve interior, there are two types: metal metal and non-metal metal sealing. The latter can achieve a leakage level of VI (zero leakage) when the valve is closed. According to different fillers, it can be divided into two types: general packing seal and corrugated pipe seal. The former is used for general occasions, while the latter is used for special occasions where leakage is not allowed. The flow characteristics are linear or equal percentage. The use of different actuators can be divided into two types: ordinary and electronic. A variety of specifications are available for selection.
characteristic
◆ The valve body is designed according to the principle of fluid mechanics, and the rated flow coefficient increases by 30%.
◆ Wide adjustable range, with an inherent adjustable ratio of 50, and flow characteristics with straight lines and equal percentages.
The electric double seat regulating valve has low imbalance force, good valve stability, and a large pressure difference during use.
The regulating and cutting type adopts a soft sealing structure valve core, which meets the Class VI leakage standard (zero leakage).
The servo amplifier adopts deep dynamic negative feedback, which can improve the accuracy of automatic adjustment.
There are various forms of electric operators that can be applied to 4-20mA. DC or 0-10mA. DC.
The electronic electric regulating valve can be directly controlled by the current signal to control the valve opening, without the need for a servo amplifier.
The bellows sealed regulating valve forms a complete seal on the moving valve stem, blocking fluid leakage.
Main component materials
Valve body and cover: HT200, ZG230-450, ZG1Cr18Ni9Ti
Valve core and valve stem: 1Cr18Ni9Ti, Si Ti Lai alloy overlay welding reinforced polytetrafluoroethylene
Filler: PTFE, flexible graphite
Bushing: 2Cr13
Gaskets: rubber asbestos board, 1Cr18Ni9Ti asbestos spiral wound gasket
Bellows: 1Cr18Ni9Ti

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east instrument

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