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    • 11. 发明专利
    • FR2675598A1
    • 1992-10-23
    • FR9104726
    • 1991-04-17
    • EMERIT MICHELHECQUET GENEVIEVE
    • MICHEL EMERITGENEVIEVE-NEE-HECQUET EMERIT
    • G05D7/01
    • The device is comprised, between the inlet (A) and the oulet (B) of the fluid, of automatic self-regulation means adapted to maintain the fluid pressure difference constant between the inlet (A) ant the oulet (B), at a predetermined set-point value; said means comprise, arranged on a fluid conduit (1) between the inlet (A) and the oulet (B), a movable regulating element (2) for creating a variable pressure drop, and means for adjusting said pressure drop to the set-point value, cooperating with said adjusting element through a first housing (5) opening to the movable adjusting element and communicating either with the fluid outlet (B) or fluid inlet (A) according to the effective value of the pressure difference between the inlet and the oulet with respect to the set-point value. The device according to the invention may be used as a progressive discharge valve, particularly at the foot of heating columns.