Valve Regulator Sci L02 for Machine

Model NO.: SCI L02 Material: Steel
 
Regulating valve for regulating the flow, pressure, temperature, liquid level and other process parameters in the field of industrial automation process control. According to the control signal in the automation system, the valve opening is automatically adjusted to achieve the medium flow, pressure, temperature and liquid level adjustment. The control valve is usually composed of two parts of the electric actuator or pneumatic actuator and valve body. Straight trip mainly has two seater two single block and straight through, the latter having large flow capacity, imbalance and stable operating characteristics, so it is especially suitable for in large flow, high pressure drop and leakage less occasions. Corner of the main travel: V type electric control valve, electric butterfly valve, vent valve, eccentric butterfly valve, etc.. Cv value is one of the main parameters of the regulation valve selection, the valve's flow capacity is defined as: when the valve is fully open, the valve at both ends of the pressure difference is 0.1MPa, the fluid density is 1g/cm3, the flow per hour of the flow number, known as the flow coefficient, Cv said, the unit is t/h, the Cv value of the liquid press. According to the Cv value of the flow capacity of the table, you can determine the nominal diameter of the control valve DN. In the modern chemical plant automatic control, the control valve plays a very important role, the production of these plants depends on the flow of liquid and gas in the right allocation and control. These control whether the exchange of energy, the pressure of the lower or the simple container feeding, the need to complete the final control element. The final control element can be considered as an automatic control of the "physical"". At the low energy level of the regulator and the high energy level required to perform the fluid flow control, the final control element completes the necessary power amplification effect. Development process of control valve
The development of control valve since twentieth Century has been eighty years of history, has produced ten major categories of control valve products, self operated valve and locator, etc., the 20's: the original stable pressure regulator. 30's: "valve seat and single seat valve V" gap as the representative products of V type ball valve available. 40 time: the emergence of the new varieties of valve, valve, valve, angle valve, butterfly valve, ball valve, etc.. 50's: ball valve has been promoting the use of larger, three-way valve instead of two single seat valve input system. 60 time: in the domestic to the above products have been a series of improved design and standardization, standardization, the domestic only after a complete series of products. Now we are still a lot of use of single seat valve, double seat valve, angle valve, three-way valve, diaphragm valve, butterfly valve, ball valve seven products are still the sixties level products. At this time, foreign countries began to launch the eighth kinds of structure control valve - sleeve valve. 70 time: a new structure of the product - eccentric rotary valve advent (the ninth category structure of the regulation valve varieties). Sleeve valve is widely used abroad in this period. 70 time end, the domestic joint design of the sleeve valve, so that China has its own sleeve valve product line. In the 1980s: during the reform and opening up, China has successfully introduced a petrochemical plant and control valve technology, the sleeve valve, eccentric rotary valve has been promoting the use, in particular, the sleeve valve, much to replace the single, double seat valve of the potential, the use of more and more widely. 80 time end, the regulator valve is a major progress in Japan's Cv3000 and fine small valve, they in the structure, the single spring of pneumatic film actuator to multi - spring type actuator, the valve structure is improved, not changed. Its outstanding characteristic is to make the weight and height of the control valve 30%, flow coefficient increased by 30%. 90 time control valve is focused on the reliability, special difficult product research, improvement, improvement. To the end of the age of 90, Waring introduced by the structure of the tenth kinds of products -- full-featured ultra light valve. Its outstanding feature is the reliability, function and weight of the breakthrough. Functional breakthrough, only have a fully functional products, therefore, by a product instead of a number of functional is not complete products, so that selection simplified, simplification, variety simplified; the weight of breakthrough -- than the leading products single seat valve, double seat valve, sleeve valve light 70 ~ 80%, than the fine small valve lighter 40 ~ 50%; reliability of the breakthrough to solve the traditional regulating valve and so on each kind of reliability factors, such as the reliability of sealing and positioning reliability, action reliability. The advent of the product, so that China's regulation valve technology and application level reached the end of the ninety's advanced level; it is a major breakthrough in the control valve; in particular, the electronic full function ultra light valve, will become the mainstream of the next century. Regulating valve type and Application
Control valve is the most widely used type of control components. The rest of the final control element includes a metering pump, a regulating baffle plate and a louver baffle, a variant of the butterfly valve, variable pitch fan blade, a current regulating device and different from the valve motor positioning device. Although the control valve is widely used, the adjustment system of the other elements of the system is probably not as little as the maintenance workload. In many systems, the operating conditions such as temperature, pressure, corrosion and pollution are more serious than other components, however, when it controls the flow of process fluid, it must be satisfied with the least amount of maintenance. Role of variable resistance in pipe. It changes the process fluid turbulence or in the laminar case provides a pressure drop and pressure drop is caused by the change of valve resistance or "friction". 

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