本公司生産的系列自力式微壓調節閥是一種無需外來(lái)能源的 節能型産品，利用工業管道中介質的(de)壓力變化與信号進行比較， 使被調節介質的(de)力與執行機構的輸出力(lì)平衡(héng)，以達到穩定壓力、 差壓值(zhí)。 

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.