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ZAZP electric single seat regulating valve
Electric single seat regulating valve receives DC current signals from the regulating instrument, changes the flow rate of the regulated medium, and maintains the controlled process parameters at the given values. Widely used in the production automation control of industrial sectors such as power, metallurgy, chemical, petroleum, textile, pharmaceutical, papermaking, etc. The nominal diameter of this series of products ranges from 20 to 200mm, with nominal pressures of 1.0, 1.6, 4.0, and 6.4MPa. The operating temperature range is from -40 ℃ to 450 ℃, and the received signal is 0~10mA.DC or 4~20mA.DC. The electric single seat regulating valve is suitable for situations with small pressure difference, high medium viscosity, or slight particle impurities. Electric sleeve regulating valve is suitable for situations with large pressure difference. According to the material of the sealing part of the valve, there are two types: metal metal and non-metal metal seals. The latter can achieve a leakage rate of VI level (zero leakage) when the valve is closed. According to the different packing materials, it can be divided into two types: general packing seal and corrugated pipe seal. The former is used in general occasions, while the latter is used in important occasions where leakage is not allowed. The flow characteristics are linear or equal percentage. There are two types of actuators available: ordinary and electronic. A variety of varieties and scales are available for selection.
Product Features The valve body is designed according to the principles of fluid mechanics, with a low flow resistance flow channel of equal cross-section, and the rated flow coefficient is increased by 30%. The adjustable range is large, with an inherent adjustable ratio of 50, and the flow characteristics include straight lines and equal percentages. The regulating cut-off type adopts a soft sealing structure valve core, which meets the VI level 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 used for 4-20mA DC or 0-10mA.DC. Electronic electric control valves can be directly controlled by current signals to regulate valve opening, without the need for servo amplifiers. The bellows sealed regulating valve forms a complete seal against the moving valve stem, blocking fluid leakage.
Part material Valve body and cover: HT200, ZG230-450, ZG1Cr18Ni9Ti Valve core: ZG1Cr18Ni9Ti, Stellite alloy overlay welding reinforced polytetrafluoroethylene Packing: polytetrafluoroethylene, flexible graphite Push rod and liner: 2Cr13 Gasket: Rubber asbestos board, 10, 1Cr18Ni9Ti asbestos wrapped gasket Bellows: 1Cr18Ni9Ti
Ordering Instructions Name and model of regulating valve Nominal pressure Mpa Nominal diameter (mm) Rated flow coefficient (Kv) Inherent flow characteristics medium name Working temperature and range Operation mode of the whole machine Pressure set point and adjustment range Valve body, valve internals, and packing materials Attached attachments Other special requirements |
