本公司生産的系列自力式微壓調節閥是一種無(wú)需外(wài)來(lái)能源的 節能型産品，利(lì)用工業管道中介質的壓力(lì)變化與信号進行比較， 使被調節介質的力(lì)與執行機構的輸出力(lì)平衡，以達到穩定壓力、 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.