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    • 1. 发明专利
    • LEVEL CONTROL VALVE
    • JPS5533980A
    • 1980-03-10
    • JP9819179
    • 1979-07-31
    • KATSUJI FUJIWARA
    • FUJIWARA KATSUJI
    • F16K31/34
    • PURPOSE:The valve which can be used for the fluid of the wide range, does not need to set the pilot valve port large considering the leak caused by the abrasion of the sliding seal member, and can make the pilot valve operation mechanism of the float, etc. smaller. CONSTITUTION:When the liquid level of the tank, etc. is at the designed position and the float 22 stops to clog the pilot valve port 19, the valve disk 4 is situated on the valve seats 9,10 to shut off the connection of the passages 5,8. When the liquid level of the tank, etc. goes down with the float 22 to open the pilot valve port 19, the pressure in the pressure chamber 3 is discharged through the pilot passage 16, and the valve disk 4 is separated from the valve seats 9,10 being pushed by the pressure on the inlet passage 5 side. By doing so, liquid is supplied to the tank through the inlet passage 5, pressure chamber 3, outlet passage 8, and the extension pipe 11.