Analyses the electromagnetic pneumatic valve to adjust the importance of the pneumatic valve

with the influence of the society, our country gradually of pneumatic valve into the market, to adjust the flow characteristic of pneumatic valve, pneumatic valve is in both ends of differential pressure and under the condition of constant flow medium diameter regulating pneumatic valve of the relation between relative flow and its opening. Adjust the flow characteristic has a linear characteristic of pneumatic valve, percentage and parabolic characteristics such as three, three note the significance of flow characteristic is as follows:
, such as percentage of relative trip and no linear relationship between relative flow in the process of every point unit running change caused by the flow of change is proportional to the flow of this point, the percentage of the flow rate change is equal, so it has the advantage of traffic hours, changing flow is small, large flow, the flow rate change is big, is also on the different opening, has the same accuracy.
, the linear characteristic of relative stroke and the relative flow into a linear relationship. Unit trip caused by the change of the flow rate change is constant, large flow, the flow relative changes little, traffic hours, flow relative change is big. Regulating pneumatic valve class including pneumatic valve, throttle valve and pressure pneumatic valve, its purpose is to adjust the parameters such as pressure, flow rate of medium.
regulating pneumatic valve consists of electric actuators or pneumatic actuators and regulating pneumatic valve in two parts. Adjust and usually can be divided into direct single seat type and direct two-seater type two kinds, the latter has a large flow capacity, small unbalanced force and the characteristics of stable operation, so is especially used for heavy traffic, high step-down and leak less occasion.