Non-return valve for e.g. determining direction of flow of fluid within pipes for supercharged engine for tank regeneration of motor car, has venturi nozzle with two conical recesses, which are formed in valve housing or in part of housing

摘要

The valve (1) has a sealing body (5) fluid-conductingly separating an inlet (3) from an outlet (4) of a valve housing (2) as soon as a pressure in the outlet is higher than in the inlet. The outlet discharges into a constriction (7) of a venturi nozzle (6), which is integrated in the valve housing. The venturi nozzle includes two conical recesses (6a, 6b), which are formed in the valve housing or in a part (2a) of the valve housing. The constriction of the venturi nozzle is arranged between openings (8, 9) of the venturi nozzle.