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KOSO PRF400 series is a direct-connected Air filter pressure reducing valve, which is characterized by small size, convenient installation and easy operation.
Parameters:
Max. Set Press:200/400/800kPa
Air Connection:Rc 1/4, 1/4NPT
1. Working principle of PRF300/PRF400 filter pressure reducing valve
The Air filter pressure reducing valve is decompressed by the throttling effect of the air inlet, and the pressure is stabilized by the balance of the force on the diaphragm and the overflow effect of the overflow hole; the output pressure can be changed within a certain range by adjusting the spring. In order to prevent the pollution of the surrounding environment caused by a small amount of gas lingering from the above overflow pressure reducing valve, a pressure reducing valve without an overflow valve (that is, a common pressure reducing valve) can be used.
2. Basic performance of PRF300/PRF400 filter pressure reducing valve
Parameters:
Max. Set Press:200/400/800kPa
Air Connection:Rc 1/4, 1/4NPT
1. Working principle of PRF300/PRF400 filter pressure reducing valve
The Air filter pressure reducing valve is decompressed by the throttling effect of the air inlet, and the pressure is stabilized by the balance of the force on the diaphragm and the overflow effect of the overflow hole; the output pressure can be changed within a certain range by adjusting the spring. In order to prevent the pollution of the surrounding environment caused by a small amount of gas lingering from the above overflow pressure reducing valve, a pressure reducing valve without an overflow valve (that is, a common pressure reducing valve) can be used.
2. Basic performance of PRF300/PRF400 filter pressure reducing valve
(1) Pressure regulating range: It refers to the adjustable range of the output pressure P2 of the pressure reducing valve, within which the specified accuracy is required. The pressure regulating range is mainly related to the stiffness of the pressure regulating spring.
(2) Pressure characteristics: it refers to the characteristics of output pressure fluctuations caused by input pressure fluctuations when the flow g is a fixed value. The smaller the output pressure fluctuation, the better the performance of the pressure reducing valve. The output pressure must be lower than the input pressure - a fixed value that basically does not change with the input pressure.
(3) Flow characteristics: it refers to the persistence of the input pressure-timing, the output pressure changes with the change of the output flow g. When the flow rate g changes, the smaller the change in output pressure, the better. Generally, the lower the output pressure, the less it fluctuates with the output flow.
3. Selection principle of PRF300/PRF400 filter pressure reducing valve
Select the type and pressure regulation accuracy of the pressure reducing valve according to the requirements of use, and then select its diameter according to the required output flow. When determining the air source pressure of the valve, it should be greater than the output pressure by 0.1MPa.
The pressure reducing valve is generally installed after the water separator and before the lubricator or the setter, and be careful not to reverse its inlet and outlet; when the valve is not in use, the knob should be loosened to avoid the diaphragm often being affected by pressure deformation its performance.
The pressure reducing valve is generally installed after the water separator and before the lubricator or the setter, and be careful not to reverse its inlet and outlet; when the valve is not in use, the knob should be loosened to avoid the diaphragm often being affected by pressure deformation its performance.