Year1
- 尺寸范围：
- DN15～DN150
- 压力等级：
- 0.1～1.0MPa
- 适用介质：
- 气体 、蒸汽
Imported self-operated differential pressure regulating valve
Overview The self-operated differential pressure regulating valve adopts a balanced single-seat valve, which uses the energy of the medium to be adjusted to realize two media, or two different pressures of the same medium. The actuator product R-type self-operated differential pressure valve automatically adjusts the difference between the two. The quick-opening flow characteristic adjustment mechanism has stable medium pressure, high adjustment accuracy, and safe and reliable sealing performance. It is used to control small differential pressure. The differential pressure value is a compression spring or a tension spring. The R-type self-operated differential pressure valve adopts a double-seat valve with a large rated flow coefficient. By flipping the valve core upside down, it can be assembled into two different products. Therefore, this product is suitable for various industrial furnace combustion systems to control the mixing ratio flow of two fuel gases or for use in the sealing oil system of hydrogen-cooled generator sets. The control pressure difference of the self-operated pressure difference regulating valve can be adjusted. Its setting value directly affects the success of the differential pressure regulating valve in the system. If the setting value of the self-operated pressure difference regulating valve is less than the required value, the control loop flow requirements cannot be met. If the control pressure difference is set too large, it will cause a waste of system resources and energy, and some may even cause system failure. oscillation, so the control pressure difference must be carefully calculated and determined and submitted to the valve installer.
Value calculation when the imported self-operated pressure difference regulating valve is connected in series with an electric two-way valve
When calculating the value, △～[],
respectively refer to the supply and return water pressure difference of the loop
/Refers to the maximum return water flow through the end
/Refers to the density of water.
Assuming that the flow capacity of the selected electric valve is, then apply the formula to back-calculate the △ value, which is the required control pressure difference value.
The imported self-operated differential pressure regulating valve can automatically adjust the differential pressure of one or two media without external energy to maintain the differential pressure at a constant value. It can be used in variable flow heating network systems and also It can be used in industrial furnace gas combustion systems to control the mixing ratio of fuel A and B and adjust the flow rate to achieve ideal combustion conditions and save fuel and investment. It can also be used in various industries such as coal gas, natural gas, liquefied petroleum gas, ammonia, nitrogen, oxygen, etc. The gas is decompressed and micro-pressured in the differential pressure regulating system.
Technical Specifications Basic Design B Test B
Size Range~
Pressure Level~
Shell Material Carbon Steel Stainless Steel Alloy Steel
Applicable Medium Gas Steam
Operation Method automatic technical parameters [Product Features]
The set value can be adjusted without stopping production. No packing. There is no friction when the valve stem moves up and down. The upper seal is absolutely reliable. The sensitive parts of the actuator are extremely sensitive and extremely sensitive. Small pressure changes will be sensed. The valve body is a four-way type. Therefore, type B can use the same valve body.
【Detailed parameters】
Note that the nominal pressure of single seat is , and that of double seat is.
The two-seat differential pressure adjustment range is ~.
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