| 摘要 |
PROBLEM TO BE SOLVED: To provide a normally closed type liquid control valve 1 combining a cut-off function and an automatic regulating function of outflow side pressure. SOLUTION: This liquid control valve has a pressure regulating piston 11 moving in a housing 2 in quest of the balancing point of outflow side pressure and the spring force of a pressure regulating spring 12 installed to oppose the outflow side pressure; a movable valve seat 16 provided at the pressure regulating piston 11 and moving together with the pressure regulating piston 11; and a valve element 17 seated on the valve seat 16 by valve closing force generated by inflow side pressure and the spring force of a cut-off spring 26, and separated from the valve seat 16 to open the valve when external valve opening force larger than the valve closing force is applied. The liquid control valve 1 thereby exhibits the automatic regulating function of outflow side pressure by the movement of the pressure regulating piston 11, and the cut-off function by closing the valve. |
