本公司(Si)生産[Chan]的[De]系列自力式微壓調節閥是(Shi)一種[Zhong]無需外來能源的 節能型産品，利用工[Gong]業(Ye)管道中介質的壓力變化與信号[Hao]進行比(Bi)較， 使[Shi]被調節介質的力與執行機構的輸出力平衡，以達到穩定[Ding]壓力、 差壓值。 

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.