Basic performance of the pressure reducing valve


According to the requirements of use, the type of press […]

According to the requirements of use, the type of pressure reducing valve and the accuracy of pressure regulation are selected, and then the diameter is selected according to the required maximum output flow rate. When determining the source pressure of the valve, it should be greater than the maximum output pressure of 0.1 MPa. The pressure reducing valve is generally installed after the water separator, before the oil mister or the constant value device, and be careful not to reverse the inlet and outlet; when the valve is not in use, the knob should be loosened to prevent the diaphragm from being constantly deformed by pressure. Its performance.

1.Pressure regulation range: It refers to the adjustable range of the pressure reducing valve output pressure P2, within which the specified accuracy is required. The pressure regulation range is mainly related to the stiffness of the pressure regulating spring.

2.Pressure characteristics: It refers to the characteristic that the output pressure fluctuates due to input pressure fluctuation when the flow rate g is constant. The smaller the output pressure fluctuation, the better the characteristics of the pressure reducing valve. The output pressure must be lower than the input pressure—the set value does not substantially change with the input pressure.

3.Flow characteristics: It refers to the input pressure-timing, and the output pressure changes with the change of the output flow g. When the flow rate g changes, the smaller the change in the output pressure, the better. Generally, the lower the output pressure, the smaller the fluctuation with the output flow.