本公司生产的系列自力式微压调节阀是一种无需外来能源的 节能型产品，利用工业管道中介质的压力变化与信号进行比较， 使被调节介质的力与执行机构的输出力平衡，以达到稳定压力、 差压值。 

The series of self operated micro pressure regulating valve produced by the company is an energy-saving product without external energy. The pressure change and signal of the medium in the process pipe- line are compared to make the force of the regulated medium and the output force of the actuator balance， so as to achieve stable pressure and differential pressure.