FIELD: mechanical engineering.
SUBSTANCE: device has body, wall, separating inlet and outlet branch pipes. Wall is connected to body by cylindrical hollow connections. Inside each connection two-position lock valve, bushing and flow washer are placed, On side surfaces of connections and bushings apertures are made for passing of operation environment to washers from inlet branch pipe. Supply of operation environment from inlet branch pipe to flow washers is performed with expansion of flow in intermediate hollow. Values of effective area of bushings follow integer-valued sequence of flow washers.
EFFECT: higher reliability.
2 cl, 2 dwg
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