Fluidic device combining a non-return valve and a dual-flow flow restrictor

A fluidic device, comprising an inlet and an outlet connected by a body forming a channel between the inlet and the outlet, wherein the fluidic device comprises a non-return valve shaped to prevent a fluid from passing from the outlet to the inlet, and a flow restrictor shaped to allow a fluid to pass from the inlet to the outlet at a first flow rate when a differential pressure between the outlet and the inlet is below a threshold, and at a second flow rate, significantly lower than the first flow rate, when the differential pressure between the outlet and the inlet is above the threshold;

• wherein the non-return valve comprises a non-return piston and a non-return seat, wherein the non-return piston is adapted to be pushed towards the non-return seat by a fluid flowing from the outlet to the inlet, wherein the non-return seat has a non-return hole coinciding with the inlet and the non- return piston comprises a non-return end, arranged opposite the non-return hole, shaped in a complementary manner to the non-return hole so that the non-return end closes the non-return hole when pushed against the non-return hole;
• wherein the flow restrictor comprises a restrictor piston and a restrictor seat, the restrictor piston is adapted to be pushed towards the restrictor seat by a fluid flowing from the inlet to the outlet, the restrictor seat has a restrictor hole coinciding with the outlet and the restrictor piston comprises a restrictor end, arranged opposite the restrictor hole, shaped in a complementary manner to the restrictor hole so that the restrictor end closes the restrictor hole when pushed against the restrictor hole;
• and
• wherein the non-return valve further comprises a non-return biasing member, wherein the non-return biasing member tends to push the non-return piston towards the non-return seat and wherein the flow restrictor further comprises a restrictor biasing member, wherein the restrictor biasing member tends to move the restrictor piston away from the restrictor seat.

A fluidic device, comprising an inlet and an outlet connected by a body forming a channel between the inlet and the outlet. wherein the fluidic device comprises a non-return valve shaped to prevent a fluid from passing from the outlet to the inlet, and a flow restrictor shaped to allow a fluid to pass from the inlet to the outlet at a first flow rate when a differential pressure between the outlet and the inlet is below a threshold, and at a second flow rate, significantly lower than the first flow rate, when the differential pressure between the outlet and the inlet is above the threshold;

• wherein the flow restrictor comprises a restrictor piston and a restrictor seat, the restrictor piston is adapted to be pushed towards the restrictor seat by a fluid flowing from the inlet to the outlet. the restrictor seat has a restrictor hole coinciding with the outlet and the restrictor piston comprises a restrictor end, arranged opposite the restrictor hole, shaped in a complementary manner to the restrictor hole so that the restrictor end closes the restrictor hole when pushed against the restrictor hole;
• wherein the non-return valve comprises a non-return piston and a non-return seat, wherein the non-return piston is adapted to be pushed towards the non-return seat by a fluid flowing from the outlet to the inlet, wherein the non-return seat has a non-return hole coinciding with the inlet and the non-return piston comprises a non-return end, arranged opposite the non-return hole, shaped in a complementary manner to the non-return hole so that the non-return end closes the non-return hole when pushed against the non-return hole;
• and
• a balancing biasing member tending to move the non-return piston away from the restrictor piston.