A valve system comprising a valve body having an opening and an interior; a davit system comprising: a first pillar having an upper end and a lower end, wherein the lower end of the first pillar is attached to the valve body; a second pillar having an upper end and a lower end, wherein the lower end of the second pillar is attached to the valve body; a pivot arm having a first end and a second end, wherein the first end of the pivot arm is rotationally attached to the upper end of the first pillar, the second end of the pivot arm is removably attached to the upper end of the second pillar and the pivot arm straddles the valve body opening when the second end of the pivot arm touches the upper end of the second pillar; and a closure cap system comprising a closure cap, wherein a means for sealing the closure cap is disposed between the closure cap and the valve body; and a cap stem having an upper end and a lower end, wherein the lower end of the cap stem is attached to the closure cap and the upper end of the cap stem is disposed through a central portion of the pivot arm; and wherein a means for lifting and lowering the closure cap engages the cap stem to lift or lower the closure cap is disclosed. A method of using the valve system is also disclosed.

A valve system comprising a valve body having an opening and an interior; a davit system comprising: a first pillar having an upper end and a lower end, wherein the lower end of the first pillar is attached to the valve body; a second pillar having an upper end and a lower end, wherein the lower end of the second pillar is attached to the valve body; a pivot arm having a first end and a second end, wherein the first end of the pivot arm is rotationally attached to the upper end of the first pillar, the second end of the pivot arm is removably attached to the upper end of the second pillar and the pivot arm straddles the valve body opening when the second end of the pivot arm touches the upper end of the second pillar; and a closure cap system comprising a closure cap, wherein a means for sealing the closure cap is disposed between the closure cap and the valve body; and a cap stem having an upper end and a lower end, wherein the lower end of the cap stem is attached to the closure cap and the upper end of the cap stem is disposed through a central portion of the pivot arm; and wherein a means for lifting and lowering the closure cap engages the cap stem to lift or lower the closure cap is disclosed. A method of using the valve system is also disclosed.

An EGR valve includes a valve seat in a flow passage of a housing, a valve element seatable on the valve seat, a rotary shaft to open or close the valve element, a motor and a speed reducing mechanism, a return spring urging the valve element in a valve closing direction, and an opening-degree sensor to detect an opening degree of the valve element. An electronic control unit (ECU) diagnoses abnormality due to lodging of foreign matter between the valve seat and the valve element during full close. When driving the motor to urge the valve element in the valve closing direction during full close of the valve element, the ECU determines the EGR valve to be abnormal because of lodging of foreign matter if a difference between a value detected by the opening-degree sensor and a predetermined reference value is larger than a first determination value.

An EGR valve includes a valve seat in a flow passage of a housing, a valve element seatable on the valve seat, a rotary shaft to open or close the valve element, a motor and a speed reducing mechanism, a return spring urging the valve element in a valve closing direction, and an opening-degree sensor to detect an opening degree of the valve element. An electronic control unit (ECU) diagnoses abnormality due to lodging of foreign matter between the valve seat and the valve element during full close. When driving the motor to urge the valve element in the valve closing direction during full close of the valve element, the ECU determines the EGR valve to be abnormal because of lodging of foreign matter if a difference between a value detected by the opening-degree sensor and a predetermined reference value is larger than a first determination value.

A medical tested object auto-ejection structure comprises a detection instrument and a tested object (1). An insertion port is formed in the detection instrument. When the tested object (1) is inserted in the instrument through the insertion port, the bottom end of the tested object (1) presses a bulge (21) used for rebounding, and a raised step (11) arranged on the surface of one side of the tested object (1) is locked on a clamping buckle (31) arranged at a position corresponding to the step on the instrument simultaneously, and after a test is finished, the instrument releases the locking of the clamping buckle (31) for the tested object (1) by a transmission device, and the tested object (1) is ejected from the instrument in time under the action of the bulge (21) used for rebounding, thus solving the problem of forgetting to pull the tested object out or inability to pull it out in time, and improving the reliability of the product.

The invention relates to a valve (10) for regulating oxygen in a fuel cell system (11), comprising: a valve housing (12), which has a valve seat (13) and a through-opening (14) in the valve seat (13); a valve shaft (15), which has a valve disk (16) formed thereon for closing the through-opening (14) in the valve seat (13) in a closed state of the valve (10) and for releasing the through-opening (14) in a released state of the valve (10); anda moving means (17) for linearly moving the valve disk (16) between an opening position in an open state, in which open state the valve disk (16) is spaced apart from the valve seat (13), and a closing position in the closed state, in which closed state the valve disk (16) is positioned on the valve seat (13), and for rotationally moving the valve shaft (15) in order to pivot the valve disk (16) between the opening position and a releasing position in the released state, in which released state at least part of the valve disk (16) is spaced farther apart from the valve seat (13) than in the opening position. The invention also relates to a fuel cell system (11) comprising at least one valve (10) according to the invention.

The invention relates to a valve (10) for regulating oxygen in a fuel cell system (11), comprising: a valve housing (12), which has a valve seat (13) and a through-opening (14) in the valve seat (13); a valve shaft (15), which has a valve disk (16) formed thereon for closing the through-opening (14) in the valve seat (13) in a closed state of the valve (10) and for releasing the through-opening (14) in a released state of the valve (10); anda moving means (17) for linearly moving the valve disk (16) between an opening position in an open state, in which open state the valve disk (16) is spaced apart from the valve seat (13), and a closing position in the closed state, in which closed state the valve disk (16) is positioned on the valve seat (13), and for rotationally moving the valve shaft (15) in order to pivot the valve disk (16) between the opening position and a releasing position in the released state, in which released state at least part of the valve disk (16) is spaced farther apart from the valve seat (13) than in the opening position. The invention also relates to a fuel cell system (11) comprising at least one valve (10) according to the invention.

A fluid control valve is disclosed, comprising: a valve body defining an outer wall for a curved flow path through the fluid control valve; and a valve element defining an opposing inner wall and rotatable relative to the valve body about a pivot point through between a closed position a range of open positions. A separation between the first inner wall and the outer wall along a restrictor portion of the flow path varies between open positions. The first inner wall and the outer wall are cooperatively defined so that for at least some open positions the separation between the first inner wall and the outer wall is constant along the respective restrictor portion of the flow path.

A fluid control valve is disclosed, comprising: a valve body defining an outer wall for a curved flow path through the fluid control valve; and a valve element defining an opposing inner wall and rotatable relative to the valve body about a pivot point through between a closed position a range of open positions. A separation between the first inner wall and the outer wall along a restrictor portion of the flow path varies between open positions. The first inner wall and the outer wall are cooperatively defined so that for at least some open positions the separation between the first inner wall and the outer wall is constant along the respective restrictor portion of the flow path.

A double eccentric valve includes: a drive mechanism which produces drive force for rotating a rotation shaft in a direction to open the valve; a drive force receiving unit provided integrally with the rotation shaft to receive the drive force; a bearing located between a valve element and the drive force receiving unit along the center axis of the rotation shaft to support the rotation shaft; and a return spring which produces return spring force for rotating the rotation shaft in a valve closing direction. The double eccentric valve is configured to generate a separating-direction biasing force which inclines the rotation shaft with the bearing at a fulcrum to bias the valve assembly away from a valve seat, the force being caused by the return spring force when the drive mechanism is not operated and acting in a direction perpendicular to the center axis of the bearing.