FIELD: machine engineering.
SUBSTANCE: inside a valve body provided with a first flow path and a second flow path, which are connected in parallel with a first port and a second port, there are a needle valve body which opens/closes the throttle hole in the first flow path. Also inside the valve body, there are a check valve assembly which opens/closes the second flow path, and a piston which performs opening/closing control for the needle valve body by the cooperation of the pressure of the fluid medium introduced into high-pressure chamber, and the force of compression spring. Needle valve body is built on top of rod connected with the piston. Inside the rod and the needle valve body, there is a passage opening connecting the throttle hole and the high-pressure chamber.
EFFECT: simplification of design and reduction of valve dimensions.
11 cl, 12 dwg
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