Self-acting Flow Control Valve does not require additional driving energy and is a kind of energy-saving control device; it is a specialized product for current most popular nitrogen sealing system of storage tanks.
*SO-25108 adopts the pilot-operated pilot valve technology, which results in less valve sealing compared to the double diaphragm head structure type of valves. It is more sensitive in operation (there is no sealing between the valve stem and the valve body), ensuring the accuracy of the designed value.
*SO-25108 is different from self-operated pressure reducing valves that adopt double diaphragm heads and have a valve core with a flat structure and fast-opening flow characteristics. The valve core of SO-25108 adopts a valve core with approximately equal percentage flow characteristics.
*SO-25108 is equipped with adjustable flow-limiting elements, which can adjust the flow capacity according to the difference between the design parameters and the actual working conditions. This compensates for the need to reduce the flow capacity of the valve in actual working conditions without the need to replace small-diameter valves, thus saving costs.
*SO-25108's soft valve seat enables the nitrogen-sealed valve to reach the set value and fully close, reducing the impact of valve leakage on nitrogen sealing and achieving the effect of saving nitrogen.
*SO-25108 has a simple structure, is convenient for installation and debugging, and has low maintenance costs.
*SO-25108 has a wide adjustment range, ranging from 14 to 720 mmH2O water column, and can be selected and adjusted in five grades.
*SO-25108 has a fast response speed and high regulation accuracy.
*SO-25108 can play a safety protection role in the nitrogen sealing system of storage tanks.
Material: WCB、WCC、LCB、LCC、WC6、WC9、CF8、CF8M、CF3、CF3M、Ti....
Nominal Size: DN15、DN20、DN25、DN32、DN40、DN50、DN65、DN80、DN100、DN125、DN150、DN200、DN250
Pressure Rate: PN1.6~4.0MPa
Temperature Range: ≤200℃
Operator: Self-venting type
Application range: It is applicable to the automatic control systems in industrial production processes such as water supply, petrochemical, heating and cooling, energy, papermaking, food processing, and steel manufacturing, where there is no (or cannot be used) driving energy. It is particularly suitable for the automatic control system devices in the gas production and transportation or gas supply and transportation.
The quality of forged steel parts is higher than that of cast steel parts, and they can withstand the impact of beatings. The plasticity, toughness, and other mechanical properties are higher than those of cast steel parts. The diameter of cast steel gate valves is generally not more than DN80, and most of them are reduced-diameter designs. Compared with cast steel gate valves of the same diameter, the flow rate is slightly lower, but the pressure and temperature range they can withstand are higher than those of cast steel valves, and the sealing performance is much better than that of cast steel gate valves, and the service life is longer. The flow direction of the medium is not restricted like other gate valves.
The power station swing check valve is mainly suitable for the pipelines of the various systems of thermal power station to prevent the medium from flowing. Compared with other valve products, the power station swing check valve-outbound valve is high -temperature and high pressure. It is a unique and tight-seal structure. The higher the pressure, the more reliable the sealing performance. Due to the characteristics of performance and technical characteristics and working conditions, the product has also formed the characteristics of other products that cannot be replaced. This type of valve should generally be installed horizontally in the pipeline. The power station swing check valve -type stop valve has the design characteristics of ordinary spinning -type stopping valve. The valve petals rely on the flow of the medium to open and close the valve. Because the valve petals do not rub with the valve seat before closed, the cover wear is reduced to effectively extend the service life of the valve.
The Non-Rising Stem Gate Valve is also called the rotating stem gate valve. Stem and nut are arranged on the gate plate, handwheel rotation drive valve stem rotate to lift the gate, usually there is a trapezoidal thread at the bottom of the valve stem and the rotation movement is turned into a linear motion through the limit slot between the valve stem and the gate body and the gate body and the gate, that is, the operation torque is turned into operation thrust. When the valve is turned on, when the height of the gate is equal to the diameter of the valve 1: 1: 1, the channel of the fluid is completely unblocked, but at the run, this position cannot be monitored. In actual use, the vertex of the valve stem is used as a sign, that is, the position that is unmoved as its full opening position. The non-rising stem gate valve has the design characteristics of the ordinary wedge-type gate valve. The valve body has a guide mechanism, which can prevent the gate from rotating when the gate is turned on or closed, ensuring that the seal of the gate on the valve seat is accurate accordingly. At the same time, the wedge valve does not rub with the valve seat before turning off, thereby reducing the wear of the cover and effectively extending the service life of the valve.