DISTRIBUTING VALVE Russian patent published in 2002 - IPC

FIELD: life-support systems of spacecraft habitable compartments. SUBSTANCE: distributing valve has body with one inlet and two outlet passages, spring- loaded shut-off members controlled by drive in form of multi-stage profiled cam. Additional cavity is provided in body between inlet and one outlet passages. This cavity is used for mounting additional shut-off member having taper form with restrictor in form of groove. Groove is located along generatrix. Additional shut-off member is mounted coaxially relative to main shut-off member forming clearance between it and coaxial shut-off member when it is closed position. EFFECT: enhanced stability of throttling mode due to blowing restrictor in case of choking. 3 dwg